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When you exhale, the diaphragm relaxes and moves upward into a domed position. This increases the pressure in the chest cavity and forces air out of the lungs. The action of the diaphragm is caused by the muscles of the diaphragm relaxing. The elastic stretched lungs recoil becoming smaller again allowing the sternum and ribs to move downwards and inwards.
Wiki User
∙ 6y ago
Wiki User
∙ 12y agoWhen 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.)
Wiki User
∙ 12y agoit relaxes to decrease space in the body,
thus expelling air from the body
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When you breathe in does the diaphragm do?
When you breathe in, your diaphragm contracts. This makes the diaphragm move lower and increases the area in your lungs.
When you breath out which direction does your diaphragm go?
When you breathe out the diaphragm moves upwards to push the air out of the lungs. When you breathe in the diaphragm moves downwards to draw air into the lungs. When you breathe out your diaphragm contract and moves upwards towards your head. when you breathe in too much your diaphragm explodes
What is diaphragm made of?
your diaphragm is a muscle that helpsyou breathe
When you breathe in the diaphragm goes up or down?
The diaphragm goes downwards.
Why do you need a diaphragm?
The diaphragm is the main muscle used in breathing, if you can't breathe you die.
Do you need a diaphragm?
The diaphragm is the main muscle used in breathing, if you can't breathe you die.
How does Sam breathe?
usin his diaphragm n00b
What moves your lungs so you can breathe?
Your diaphragm
Describe the function of your diaphragm and explain how inhaling and exhaling occurs?
Breathing is done by your diaphragm. When you breathe in, your diaphragm tightens (contracts) and moves downward so your lungs can expand. When you breathe out (exhale) your diaphragm relaxes (expands) and moves up into your chest.
What is the sheet of muscle that moves down when you breathe in?
Diaphragm
What muscle compress and move downward when you inhale?
the diaphragm. It is right above the heart and lungs, and expands and contracts when you breathe in and out. You can almost feel it move down a little, when you release air.
Does the diaphragm lie between the thoracic and abdominal cavities and assist us to breathe?
Yes, the diaphragm lies between the thoracic and abdominal cavities and assists us to breathe.
