![]() ![]() The cookie is used to store the user consent for the cookies in the category "Analytics". This cookie is set by GDPR Cookie Consent plugin. These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. The function of the respiratory system is to move two gases: oxygen and carbon dioxide. Breathing in and out is accomplished by respiratory muscles. The rate at which oxygen is used by the body is one measure of the rate of energy expended by the body. What is the function of oxygen in the respiratory system? Oxygenated blood travels from the lungs through the pulmonary veins and into the left side of the heart, which pumps the blood to the rest of the body (see Biology of the Heart : Function of the Heart). Where does oxygenated blood go after it leaves the lungs? Diffusion is the spontaneous movement of gases, without the use of any energy or effort by the body, between the gas in the alveoli and the blood in the capillaries in the lungs. Ventilation is the process by which air moves in and out of the lungs. Gas Exchange Between Alveolar Spaces and Capillaries. How are gases exchanged in and out of the lungs? As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. Where does the exchange of oxygen and carbon dioxide take place? This process is called gas exchange and is essential to life. At the same time, carbon dioxide, a waste gas, moves from your blood to the lungs and is exhaled (breathe out). When you inhale (breathe in), air enters your lungs and oxygen from the air moves from your lungs to your blood. ![]() Where do you use oxygen that you inhale and where does the carbon dioxide come from that you exhale? This gas is transported in the opposite direction to oxygen: It passes from the bloodstream – across the lining of the air sacs – into the lungs and out into the open. You get rid of it when you breathe out (exhale). What is the pathway of carbon dioxide in the breathing system?Ĭarbon dioxide (CO2) is a waste product of cellular metabolism. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli. How oxygen and carbon dioxide are exchanged in the alveoli? 5 What is the function of oxygen in the respiratory system?.4 How are gases exchanged in and out of the lungs?.3 Where does the exchange of oxygen and carbon dioxide take place?.2 What is the pathway of carbon dioxide in the breathing system?.1 How oxygen and carbon dioxide are exchanged in the alveoli?.
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