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The Diaphragm
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∙ 13y ago
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What part of the respiratory system contracts when you inhale?
answer: diaphragm at the bottom of the chest cavity is a muscle called the diaphragm. when the diapragm contracts, the chest cavity becomes larger.
What muscle or muscles expand the chest cavity by rotating the ribs upward contibuting to inspiration?
What muscle expand the chest cavity by rotating the ribs upward, contributing to inspiration
When the diaphragm contracts the chest cavity is?
Depression results when the muscle fibers of the diaphragm contracts.
What happens to the diphgram when you inhale?
The diaphragm is a convex shaped muscle (convex side within the chest cavity).When the diaphragm muscle contracts it flattens out and drops down out of the chest cavity making more room and creating a vacuum -- air then rushes into the lungs.When the diaphragm relaxes it moves back up into the chest cavity and expels the air on the lungs. During inhalation, the increased volume of the lungs causes the ribcage to expand. Inhalation - Diaphragm CONTRACTS and moves DOWN (to allow more space in the chest cavity for lungs to expand).Exhalation - Diaphragm RELAXES and moves UP (to force air out of the lungs).
What parts of the respiratory system when you inhale?
answer: diaphragm at the bottom of the chest cavity is a muscle called the diaphragm. when the diapragm contracts, the chest cavity becomes larger.
Is a sheet of muscle located beneath the lungs that is used to expand and contrast the chest cavity of mammal?
diaphragm
Which is the major muscle for breathing?
The Diaphragm.When the diaphragm contracts, it increases the size of the thoracic cavity (chest), which lowers the air pressure, causing outside air to flow in.The external intercoastals are also used in breathing. They are the muscles on your ribs, that pull on your rib cage and help to expand the chest cavity.
What muscle expand chest cavity upward during inspiration?
The diaphragm (a sheet of muscle underneath the ribcage) and intercostal muscles (located between your ribs).
Is the lungs a muscle?
Lungs are not muscles. They are made up of connective, epithelial, and nervous tissues. The diaphragm is the muscle that contracts and relaxes to expand and relax the chest cavity. Your lungs just fill with air -- which is why they appear to be moving (much like a when a balloon fills with air).
What is the dome shaped sheet of muscle they forms the bitten of the chest cavity?
What is the dome-shaped sheet of muscle that forms the bottom of the chest cavity?The dome-shaped sheet of muscle that forms the bottom of the chest cavity is called Diaphragm.
How is the volume of the chest cavity increased during inhalation?
The diaphragm is normally dome-shaped & arches up into the chest cavity, but during inhalation it contracts & flattens down, and at the same time, the intercostal muscles expand the ribcage; these two actions increase the chest capacity by up to 75%.
When the diaphragm contracts what happens to the size of the chest cavity?
It increases.
