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When you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. This increases the space in your chest cavity, into which your lungs expand. The intercostal muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale.
As your lungs expand, air is sucked in through your nose or mouth. The air travels down your windpipe and into your lungs. After passing through your bronchial tubes, the air finally reaches and enters the alveoli (air sacs).
Through the very thin walls of the alveoli, oxygen from the air passes to the surrounding capillaries (blood vessels). A red blood cell protein called hemoglobin (HEE-muh-glow-bin) helps move oxygen from the air sacs to the blood.
At the same time, carbon dioxide moves from the capillaries into the air sacs. The gas has traveled in the bloodstream from the right side of the heart through the pulmonary artery.
Oxygen-rich blood from the lungs is carried through a network of capillaries to the pulmonary vein. This vein delivers the oxygen-rich blood to the left side of the heart. The left side of the heart pumps the blood to the rest of the body. There, the oxygen in the blood moves from blood vessels into surrounding tissues.
(For more information on blood flow, go to the Diseases and Conditions Index How the Heart Works article.)
Breathing Out (Exhalation)
When you breathe out, or exhale, your diaphragm relaxes and moves upward into the chest cavity. The intercostal muscles between the ribs also relax to reduce the space in the chest cavity.
As the space in the chest cavity gets smaller, air rich in carbon dioxide is forced out of your lungs and windpipe, and then out of your nose or mouth.
Breathing out requires no effort from your body unless you have a lung disease or are doing physical activity. When you're physically active, your abdominal muscles contract and push your diaphragm against your lungs even more than usual. This rapidly pushes out the air in your lungs.
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What happens when you exercise with the presence of oxygen?
you inhale it
Do pot plants inhale oxygen at night?
No. Plants inhale carbon-dioxide. They exhale oxygen. This process happens through the day and night.
When you breath in what happens to your lungs?
When you inhale, you breath in oxygen and your lungs get bigger.
When you inhale you breathe in what?
When you inhale you breath in oxygen
What happens to the Oxygen that is inhaled?
When you inhale, oxygen is absorbed by the lungs and transferred to the bloodstream through the alveoli. From there, it is carried by red blood cells to all the cells in the body where it is used in the process of cellular respiration to produce energy. Carbon dioxide, a waste product of this process, is then transported back to the lungs and exhaled.
Do humans inhale oxygen?
Yes, humans inhale oxygen through their lungs. Oxygen is necessary for cellular respiration, where it is used in the process of generating energy for the body's functions.
What do you inhale?
Oxygen
What happens to the gas that produced by photosynthesis?
Photosynthesis results in the release of oxygen in the air. It becomes the oxygen that we humans, and other organisms, inhale for cellular respiration.
When lungs inhale oxygen what does it exhale as waste?
when lungs inhale oxygen what doesit exhale as waste
What happens after animals inhale air?
The oxygen from the air they inhale is distributed to the body parts through the blood stream. The blood picks up carbon dioxide and it is exhaled into the environment.
Why do cats inhale oxygen?
Why do we all inhale oxygen.. every single animal in the world needs oxygen. Fish too
Describe what happens in the alveoli sacs?
When we inhale in and out oxygen moves from the alveoli to blood carbon dioxide moves from blood to alveoli.
