NEET · BiologyEasy
Which muscle is primarily responsible for the change in thoracic volume during breathing?
- A.Diaphragm
- B.Biceps
- C.Cardiac muscle
- D.Smooth muscle
Show correct answer & step-by-step solution
Correct answer: A — Diaphragm
Solution
- Breathing involves the movement of air into and out of the lungs.
- The thoracic cavity volume changes due to the contraction of the diaphragm.
- Contraction of the diaphragm increases the vertical axis of the thoracic cavity.
- Hence the answer is (A).
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