Without this thin muscle, which separates the chest from the abdomen, we would not be able to breath since it is responsible for 90% of respiration.

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candacefay9926 candacefay9926

26-10-2022
Biology

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Without this thin muscle, which separates the chest from the abdomen, we would not be able to breath since it is responsible for 90% of respiration.

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rafikiedu08 rafikiedu08 · Answer 1 · 2022-11-04T08:42:02-04:00

The diaphragm is a musculotendinous structure that separates the thoracic and abdomen cavities.

The musculotendinous diaphragm is what divides the thoracic and abdominal chambers. Respiration is mostly carried out by the muscle.

Both domes move downward as the diaphragm contracts, enlarging the thoracic cavity. Due to the decrease in intrathoracic pressure brought on by the volume increase, air is drawn in. Additionally, it raises intra-abdominal pressure. Raised intraabdominal pressure and decreased intrathoracic pressure work together to "suck" venous blood to the heart, promoting venous return.

The diaphragm may move 1.5 cm during regular breathing and up to 7 cm during intense breathing.

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