why is oxygen important for all body cells

7910 South 3500 East, Suite C Each chemical reaction (there are many) produces some hydrogen ions that are used to make energy packets, ATP, (adenosine triphosphate). We and our partners use cookies to Store and/or access information on a device. What Is a Mean Corpuscular Volume (MCV) Blood Test? An example of data being processed may be a unique identifier stored in a cookie. What Is the Primary Fuel for Cellular Respiration? Lynne Eldrige, MD, is a lung cancer physician, patient advocate, and award-winning author of "Avoiding Cancer One Day at a Time.". WebMost important step in venipuncture? This quickly turns into hypoxia, which is low oxygen in your tissues. The Iterative Nature of the Scientific Method. What is the importance of photosynthesis in maintaining ecosystem? In some conditions, the bone marrow may not produce enough RBCs. Which factor would not increase the production of glucose by photosynthesis in plants? WebIts molecules contain two oxygen atoms. Create your account. Type 2 alveoli cells are smaller and responsible for producing the substance (a surfactant) that coats the inside surface of the alveolus and helps reduce surface tension. It leads to lung diseases like chronic obstructive pulmonary disease (COPD), emphysema, and chronic bronchitis. Light-dependent; light-independent. Oxygen is also a particularly important part of our immune system. Without oxygen molecules (O2) we will begin to die within three to four minutes, unless our bodies are much There are three main steps of cellular respiration: Glycolysis is the first step of cellular respiration and it takes place in the cytoplasm. WebThe systemic capillaries are the junction points between the arteries and the veins. Air that has passed through (UV air sanitizers) is particularly good for our body's immune system, as it has been cleansed of bacteria and other agents before it enters our respiratory systems. WebLook up why in Wiktionary, the free dictionary. WebWhy is oxygen important for all body cells? Why does vegetation vary so greatly from west to east and from north to south in Texas? Which molecule is used by cells as an energy source? As electrons pass through the proteins, they pump hydrogen ions into the intermembrane space to create an electrochemical gradient that powers ATP synthase, the protein that makes ATP. On average, how many molecules of ATP are gained through the process of aerobic cellular respiration from one glucose molecule? To create that energy, the brain needs a lot of oxygen. Here are five pieces of advice to maintain optimal lung health and breathing capacity, from staying far away from cigarettes to adopting a consistent. What six elements are most important to human life? cells pass in single file. The cellular respiration is a complex biological process that breaks down sugars, fat and proteins and transforms these materials into energy for the functioning of the organism. . It helps to eliminate toxins and other harmful substances from the body, while at the same time providing energy that can be used by your bodys natural defense system. WebOxygen is important for all body cell because without Oxygen the cells of body can not complete the process of respiration. We are breathing oxygen from the air, which contains approximately 78 percent nitrogen and 21 percent oxygen. (2022). The last step of cellular respiration is where oxygen comes in. Thats why children Water and carbon dioxide are considered waste products, as the cell does not need them. But, lets go back to the beginning the drawing in of air and see what happens. 2013;0. doi:10.3389%2Ffphys.2013.00332, By Lynne Eldridge, MD Glucose in Cellular Respiration: Role & Purpose | What is Glucose Used For? Adenosine triphosphate acts like a battery for the cells by storing energy in a chemical bond. Fermentation vs. Cellular Respiration | How are Fermentation & Cellular Respiration Similar? Human cells need oxygen to produce ATP molecules, and ATP is required for cellular work. Hemoglobin, a protein, is made up of four amino acid chains. Wang Y, et al. Why is dissolved oxygen important to our ecosystem? Alpha thalassemia and beta thalassemia are the two main types. What are the reactants of cellular respiration? One of the reasons that anti-oxidants are so important in our Discover the conditions they treat (such as COPD), exams they conduct, and much. Red blood cells are responsible for carrying oxygen throughout the body, and a lack of oxygen can lead to mental fatigue and lack of concentration. The damage from smoking isnt reversible. If you are dehydrated, your hemoglobin test may show an artificially high hemoglobin level. What is oxygen's role in the electron transport chain? This large surface area is necessary to process the huge amounts of air involved in breathing and getting oxygen to your lungs. Oxygen molecules (O2) are indispensable as a component in producing sufficient energy resources for cellular function; they increase the amount of energy made available to our cells from glucose eightfold. WebExplanation: Oxygen is the only molecules to grab the reactive electron from NADH or FADH2 via hydrogen transporter molecules and become water..that is why glucose The alveoli are organized into bunches, and each bunch is grouped in the alveolar sac. Intense training, especially among endurance athletes, can cause a condition called sports anemia. Sports anemia refers to well-conditioned athletes relatively low hemoglobin levels. 10 Reasons Why Quality Assurance Is Important. What is the importance of respiration in a heterotroph? Fair to say you couldnt live Which of these products is formed during the metabolic reactions of cellular respiration? Look carefully at the model. Why is cellular respiration important to living organisms? WebOur cells combine oxygen with nitrogen and hydrogen to produce various proteins that build new cells. If the cell is receiving too much oxygen, it will oxidize. People can live about a month without food, a week without water and just few minutes without oxygen. Front Physiol. Cellular respiration is the process that cells use to make energy. When you breathe out, the alveoli shrink from expelling carbon dioxide. Free shipping. This sets up a hydrogen ion gradient that can be harnessed by the protein ATP-synthase to create large amounts of ATP for the cell. Verywell Health's content is for informational and educational purposes only. We think it's important for us to receive the off season. Eat a healthy diet with various fruits, vegetables, grains, and protein sources. The symptoms include confusion, a fast heart rate, rapid breathing, shortness of breath, sweating, and changes in the color of your skin. Pregnant women and adults over 65 are also more vulnerable than the average person. The ATP is produced by using the solar energy trapped in glucose by a plant photosynthesizing, to combine ADP and a phosphate molecule. The tri part means it has three molecules of phosphate daisy-chained to the molecule of adenosine. The cardiovascular system delivers oxygen, nutrients, hormones, and other important substances to cells and organs in the body. What Is the Chemical Equation for Cellular Respiration? In cellular respiration, oxygen is used in the inner mitochondrial membrane in the electron transport chain to facilitate oxidative phosphorylation. Muscles weaken without fuel and people feel weak. Oxygen is necessary for Its molecules contain two oxygen atoms. Several conditions are associated with high hemoglobin levels. ATP synthase makes ATP, which is cellular energy. The type 2 alveoli cells can also turn into stem cells. One of the key functions of heme is to transport oxygen in the bloodstream. ATP is the energy messenger that goes to cells. The final electron acceptor in aerobic respiration is. Plants take in and release carbon dioxide. There are abnormal types of hemoglobin that affect both the shape of RBCs but also their ability to transport oxygen and carbon dioxide, including: Low hemoglobin is called anemia. First of all, iron is essential to the production of hemoglobin, a protein in red blood cells that shuttles oxygen to organs, muscles, tissues, and cells. Different types are characterized by different hemoglobin abnormalities. It's easy to see why she fell in love with him. To make sure your animation has everything you need, check the criteria for success below. As it moves through blood vessels (capillaries) in the alveoli walls, your blood takes the oxygen from the alveoli and gives off carbon dioxide to the alveoli. When a muscle contracts, it performs work. How is oxygen important in aerobic respiration? Although theyre microscopic, - Personal Protective Equipment What is the best way to let a clean site dry? Hemoglobin may also be high in people living at high altitudes. Heres my new music video for my single WHY. Our cells combine oxygen with nitrogen and hydrogen to produce various proteins that build new cells. (801) 733-4449 Why might an oxygen dissociation curve be sigmoidal? Other lab tests can help confirm the cause of hemoglobin issues. Besides the most valuable energy resources is in electron transport which creates up to 28 ATP-32 ATP. But the bottom line is that every living thing needs oxygen. As we age, our lung capacity and function decrease. C)It increases the formation of lactic All of these are also connected by a horizontal straight line. When you breathe in, the alveoli expand to take in oxygen. Oxygen is the end electron acceptor in the electron transport chain, and is necessary to maintain the flow of electrons and thus create the hydrogen ion gradient needed for ATP synthase to function. Oxygen is dangerous to sell and how does a cell deal with toxic Oxygen towards the cell is what we are asked about. Breathing exercises to increase lung capacity may be a good place to start. Plants create oxygen using carbon dioxide, sunlight, and water. An unbalanced force Though, Carbon dioxide is a waste product produced in the body and must be removed from our body, similar to trash that must be removed from the house. For what purpose, reason, or cause; with what intention, justification, or motive: Why is the door shut? While it makes up a tiny part of the atmosphere, this molecule plays an essential role. 2019;1450(1):126-146. doi:10.1111/nyas.14003. Without ATP, organisms are not able to live. Our website services, content, and products are for informational purposes only. Manage Settings The parents are shown at the top and from left to rig Oxygen is dangerous to sell and how does a cell deal with toxic Oxygen towards the cell is what we are asked about. The air passes over alveoli, special cells in the lungs which are able to absorb oxygen. 270 lessons Oxygen is so important that it will lead to death if we are deprived of it for only a short time. Nitric oxide and carbon monoxide can also bind with hemoglobin. 50% What are some important uses of oxygen?Industries and Hospitals. In industry, the raw material used to obtain oxygen gas is atmospheric air. Applications. Oxygen is used mainly in the metal-mechanical industries as combustion of torches for welding and cutting of iron and steel materials; Is also used in the production of synthesis Biological Action. You may notice that your lung capacity is lessened or your chest muscles are weaker. It lets the blood better circulate oxygen during exercise. Symptoms vary from none to severe. 0% We can say that more oxygen we inhale, more energy our cells can produce this makes our body stronger and well-prepared for daily challenges. See more. It performs many vital functions in our bodies, so it is important that we get a lot of fresh air every day. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Get unlimited access to over 84,000 lessons. But nothing is going anywhere without the transfer of oxygen via a series of electron bearing molecules moving across membranes. Your lungs take in about 1.5 gallons (gl) or 6 liters (L) of air per minute. The chemical process that takes place in the cells is actually quite complicated. They also take away carbon dioxide and waste. calvin cycle. Thalassemia intermedia is also called "non-transfusion-dependent thalassemia." People have an average of 480 million alveoli in their lungs, located at the end of bronchial tubes. Hemoglobin is a protein in red blood cells that carries oxygen from your lungs to your tissues. Measurement and interpretation of hemoglobin concentration in clinical and field settings: a narrative review. Thank you, {{form.email}}, for signing up. RBCs usually look like donuts, but with a thin center instead of a hole. The surfactant helps keep the alveoluss shape when breathing in and out. : the cause, reason, or purpose for which. Have one to sell? WebThis is a question for all of you. How does oxygen turn into carbon dioxide in the body? Two potted plants were used in an experiment to study the amount of starch formed in leaves under different conditions. This oxygen can be found everywhere, even in tiny pockets in the soil. Try refreshing the page, or contact customer support. Losing this layer of ozone would destroy the earth and its creatures. Sometimes the cause of lung disease is unknown. A) Mixtures can be separated by physical means. The role of oxygen in cellular respiration is to act as the end electron acceptor. What effect would this have on the process of photosynthesis? An extraordinarily thin membrane between alveoli and capillaries in the lungs allows the oxygen to transfer into the blood where it is picked up by hemoglobin. Lets begin at the beginning. But in glycolysis, the first four molecules of ATP are produced without oxygen. The average adults lungs contain about 600 million alveoli. To avoid risk of fake product, always buy Eating Oxygen from the stores/websites that are verified & recognized by EatingOxygen.com or by Japan Anti Fraud Organization. WebDefine why. Let's take a look. The outside layer of alveoli, the epithelium, is composed of two types of cells: type 1 and type 2. The differences in temperatures of stars Explain which abiotic or biotic factor or combination of factors would be the most influential in creating the ecoregions in east Texas. In yeast cells, the process that occurs when there is not enough oxygen for aerobic respiration is called, Producers use energy from the sun to create ___________, or usable chemical energy. But do we really understand why is so important to us and which body functions it supports? Our bodies eat food which gives cells raw materials to make, repair, and replace cells as needed. - Low oxygen levels suppress parts of the immune system, but theres evidence that suggests low oxygen might also activate other functions. These purifiers remove particulate matter such as dust and smoke from the air, making it easier for the respiratory system to do its job. Which of these is NOT part of cellular respiration? $30.39. By which the new systems of our brain and body gets opened our nerves which are blocked due to some reasons gets opened which helps faster blood circulation. What role does oxygen play in the production of energy for working muscles? We all know that we cannot live without oxygen and that it enables life for almost all living organisms on our planet. The last chain is a high energy chain that provides energy when it is broken. Carbon monoxide binds to hemoglobin much more strongly than oxygen. Check if this part fits your vehicle. To do this, students can create a collection of Powerpoint slides that shows each step or they can use animation software. $25.45. I would definitely recommend Study.com to my colleagues. It does this by. Why is the amount of oxygen in a body of water important? What are red blood cells? The oxygen we take in Health Encyclopedia. Cellular Respiration Concept & Experiment | What is Cellular Respiration? Your body cells use oxygen you breathe to get energy from the food you eat.Our body cells require oxygen to release energy. Cells perform cellular respiration to make ATP. All rights reserved. I only need one more to level up . Highlights: Scientific review of findings regarding respiratory diseases. Producers, like this plant, take in oxygen and release carbon dioxide during __________________ , just like animals and other living things. It is involved in energy producing cycles. About & Disclaimer | Terms | Privacy | Contact, Platelets Red Blood Cells White Blood Cells Importance of Platelets Blood Germs, Understanding the different Types of Polyhedrons. When you breathe out, the lungs recoil and return to their typical size. This may include asking questions, doing a physical exam, and ordering blood tests. It is so vital to humans that doctors are always alert to signs that were not getting enough. Webwhy: [conjunction] the cause, reason, or purpose for which. Indoor pollution from secondhand smoke, mold, dust, household chemicals, radon, or asbestos can damage your lungs and worsen existing lung disease. Oxygen is used as the final electron acceptor in the electron transport chain in eukaryotic cells. Why is oxygen important for all body cells? In the process of respiration, carbon dioxide passes from the bloodstream into the alveoli, and it is eventually directed out of the human body through the bronchial tubes to the trachea to the nose and mouth where this air is exhaled. A)It is involved in sugar production B)It reduces the amount of urea in blood. But, in the well-functioning human body, the process goes smoothly and the oxygen-depleted red blood cells (hemoglobin) now carry CO2 and other waste gases of energy making, back to the heart via veins where the oxygenation process begins anew. There are a wide range of other disorders that can cause high or low hemoglobin, though. 100% Cells need oxygen mainly for two functions: Just like a car, humans also need fuel. Pneumonia is a lung infection caused by fungi, bacteria, or a virus. Anaerobic bacteria, for example, are single cell organisms that do not require oxygen. If untreated, hypoxia damages your organs and leads to death. Vitamin C tablets are taken as a dietary supplement. Sickle cell anemia is known to run in a family. It actually has positive effects. Webwhy is oxygen important for all body cells. One difference between mitochondria and chloroplasts is. High elevations, respiratory illnesses, or low hemoglobin counts can all contribute to not getting enough oxygen into our bodies. Which is the process of Oxygen breaking down Glucose to provide energy for all cells, Brainliest Plz?? The oxygen we take in during respiration is used to break down the food we eat to release energy from it. The oxygen-rich blood then cycles back to the heart where it is sent on its way via the aorta, arteries, veins, and tiny capillaries to every cell in the body. You can also get it through contact with. Chemotherapy and radiation treatments for cancer can also contribute to lung disease. The Krebs cycle occurs in a cell organelle called a mitochondrian. 2. : for which. Web2pcs Upstream&Downstream for Kia Sportage 2.0L 2005-2010 o2 02 Oxygen Sensor. Over 2,500,000 satisfied customers since 2000, 7 FDA Approved Air Purifiers for Covid-19. Small molecules like water, carbon dioxide, and nitrogen enter plant cells through the cell membrane. It counters the factors that lead to skin aging directly, by improving cell proliferation and stimulating the production of new collagen, which is the backbone of the skin and responsible for its firmness. Its a dangerous pollutant, meaning that just because something has oxygen in it, it isnt necessarily good. Ozone is part of the earths atmosphere. Grounding (metaphysics), a topic in metaphysics regarding how things exist in virtue of more fundamental things. There is such a thing as too much oxygen. If there is not enough oxygen present, the only other source of ATP is through glycol sis, the Why do organisms (like humans) need oxygen? Reason (argument), a premise in support of an argument, for what reason or purpose. The number of alveoli and alveolar sacs is what gives your lungs a spongy consistency. The lactic acid lowers the pH within the cell, which can damage the cell, possibly irreversibly, if the cell is deprived of sufficient O2 for too long. Web2pcs for 2001-2003 Honda Civic 1.7L Upstream Downstream Oxygen Sensor O2 02. The mineral #iron is found in red blood cells and has the important job of carrying and delivering oxygen to all the cells in your body. Plant cells make their own food by taking in. Conditions where hemoglobin has an abnormal structure include: Sickle cell anemia is an inherited condition. Aerobic cellular respiration has the chemical equation as follows: Glucose + Oxygen = Water + Carbon Dioxide + ATP. Oxygen is used during oxidative phosphorylation and is essential for ATP synthase to create ATP. Cellular Respiration Lesson for Kids: Definition & Steps, Working Scholars Bringing Tuition-Free College to the Community, Oxidative Phosphorylation through the electron transport chain, Animation looks professional and is colorful and attractive, Animation accurately shows the role of oxygen in cellular respiration, Animation specifically addresses how oxygen is used during oxidative phosphorylation. WebThe circulatory system (cardiovascular system) pumps blood from the heart to the lungs to get oxygen. Years of exposure to cigarette smoke can scar your lung tissue so that your lungs cant efficiently process oxygen and carbon dioxide. Picture your lungs as two well-branched tree limbs, one on each side of your chest. Producers, like this plant, take in oxygen and release carbon dioxide This oxygen poisons our central nervous system, leading to symptoms like loss of vision, seizures, and coughing. What are the reactant and products of photosynthesis? This can lead to serious problems like pain and blood clots. lessons in math, English, science, history, and more. I do not understand any of these questions and my teacher gave me no pre-reading to do so I am stuck. Oxygen plays an essential role in energy production in the cell through a system called the electron transport chain (ETC), which is an important component of cellular respiration. Hemoglobin binds and transports oxygen from the lungs to the tissues in the body. Portable Oxygen Concentrators The alveoli cover a surface of more than 1,399 feet (ft) or 130 square meters (m2). They make carbohydrates through the process of photosynthesis. Boosts Immunity. For the best experience on our site, be sure to turn on Javascript in your browser. ATP is the battery molecule of our cells, they supply the energy for all of the cellular reactions requiring an energy input. Every day, about seven hundred billion cells in our bodies wear out and must be replaced. 2005-2023 Healthline Media a Red Ventures Company. Where Does Energy Used in Cellular Respiration Originate From? Exercise helps keep your lungs in good shape by making them. Humans get the oxygen they need by breathing through their nose That is why many people use (air purifiers) at work and home. Tiny capillaries surround each sac, and the air passes over a membrane between the capillaries and the sac. Problems with hemoglobin can cause symptoms like fatigue and rapid heart rate. It is the ingredient needed to make our cells function. Pyruvate in Cellular Respiration Cycle & Role | What Does Pyruvate Do? light dependent and light independent. In the chemical process of photosynthesis, sunlight is primarily considered a(n). RSV is a contagious virus. These cells can get "stuck" in blood vessels. General Studies Earth & Space Science: Help & Review, General Studies Health Science: Help & Review, Study.com ACT® Test Prep: Practice & Study Guide, ILTS Science - Physics (116): Test Practice and Study Guide, UExcel Earth Science: Study Guide & Test Prep, DSST Health & Human Development: Study Guide & Test Prep, AP Environmental Science: Help and Review, AP Environmental Science: Homework Help Resource, Create an account to start this course today. Incredibly, the most prevalent element in our body is oxygen oxygen makes up 65 percent of human body and is responsible for 90 percent of the bodys energy. You can also wear a mask if you expose yourself to extra dust, mold, or allergens. Calvin cycle. Here, electrons are passed through a series of proteins called the electron transport chain. Here are ten reasons why oxygen matters so much: Oxygen plays several roles in the human body. While your brain only makes up 2% of your total body weight, it gets 20% of your bodys total oxygen consumption. The process of making the water releases energy and it is this energy that fuels our body. Gagandeep Brar, MD, is a board-certified hematologist and medical oncologist in Los Angeles, California. 20 chapters | In the United States, "Why" peaked at number 34 on the Billboard Hot 100 and number six on the Adult Contemporary chart. The reason why they succeeded is obvious. The mitochondria is an organelle with the main purpose of creating energy for the cell. Oxygen is used as the final electron acceptor in cellular respiration. Below the parent pair is a vertical straight line connecting to the next row of circles and squares which are the offspring. This supply of nutrients and the removal of waste is the main function of the cardiovascular system. Parainfluenza (HPIVs): Types, Causes, and Symptoms. How would you explain the role of oxygen in aerobic respiration? This makes it easier for the body to access oxygen and keeps it from receiving a fresh influx of germs and particulate matter that comes into the body through contaminated air that has not been sanitized. The diaphragm is a muscle located across the bottom of the chest that makes the body draw in air through the nose and mouth and then exhale air through the same orifices. The mitochondria has an outer membrane, an inner membrane with many folds called cristae, and the interior space, called the matrix. What is the role of oxygen gas in our cells? The electrons are collected by the electron carrier NADH. This is why aerobic organisms suffocate and die without oxygen. One has to do with the transformation of the food we eat into energy. Students should be able to explain what is going on in their animation scientifically. Because our body is not capable of storing oxygen, it is vital that we pay attention to our oxygen levels and take care of sufficient oxygen supply. It also helps maintain body temperature, among other things. The oxidation of the cell can be seen in the presence of oxygen. The results of other lab tests may help identify the cause of hemoglobin problems. Read on to learn how to increase lung capacity with these easy breathing exercises. Oxygen is essential to our cells because our cells evolved to expect it. In conditions like sickle cell anemia, hemoglobin can have an abnormal shape. The word hemoglobin is often used when discussing heavy bleeding. Hemoglobin levels are usually measured as part of acomplete blood count (CBC). The reactants of cellular respiration are glucose and oxygen, and the products are water, carbon dioxide and ATP. Its like a teacher waved a magic wand and did the work for me. Carotenoids are red, orange, or yellow pigments found in many plants. The human body is well-equipped to trap these particles, but the body works best when air is relatively pure before it is inhaled. 1. These include: Normal hemoglobin levels vary by age and sex. The veins carry oxygen-poor blood back to the heart to start the circulation process over. Cellular respiration is the process that all cells use to make energy. The table describes the conditions the plants were subjected to and the results of testing the leaves with potassium iodide to detect the presence of starch. They also retain the damaging, acidic derivatives of glucose, the lactic acids, produced at the same time as the first four ATP molecules. The process of cellular respiration can be abbreviated as a chemical equation. Why are oxygen and carbon dioxide important to mitochondria? Without O2, our cells through glycolysis produce four adenosine triphosphate (ATP) molecules and two molecules of pyruvic acid, better known as lactic acid. Furthermore, exposure to oxygen can help kill off bacteria, viruses, and What was the major contributor of oxygen to earth's early atmosphere? , . The entire process is repeated with every breath that human beings take. Anything that gets past the cilia is trapped in the mucus that lines the trachea and the bronchial tubes that take air from the trachea into the lungs. The ATP becomes adenosine diphosphate (ADP), a single phosphate molecule and energy. | 1 A census of the lung: Cell cards from lung map. One of the important waste products of photosynthesis is oxygen gas, where does this oxygen gas come from? Producers convert light energy into chemical energy. Oxygen is used in the Krebs cycle to greatly increase the amount of ATP that can be produced from a molecule of glucose. Why is oxygen gas important to the atmosphere? (2022). Iron is essential to the production of both hemoglobin and RBCs. _____ and _____ reactions are both parts of photosynthesis. To understand the role of oxygen in cellular respiration, first we will review the steps of aerobic cellular respiration. If the air has traveled through (air purifiers) first, it can enter the eye without causing irritation. What role do plants play in the carbon cycle? Every cell in the body (except those in the cornea) needs oxygen to activate the chemical process that makes energy. How Does Respiratory Syncytial Virus (RSV) Spread? Capillaries allow the transfer of nutrients and oxygen to organ and muscle cells, and the removal of waste and carbon dioxide (CO2). Explain which abiotic or bio Theres also ozone in the lower part of the atmosphere. Air purification tools such as (room ionizers) help clean the air we breathe before it enters our bodies. Oxygen helps organisms grow, reproduce, and turn food into energy. It also transports carbon dioxide from tissues back to the lungs. It's practically impossible to imagine life without water . As you learn more about your lungs, or if you have a lung problem, you may want to do some maintenance work to help your lungs function well.

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why is oxygen important for all body cells