Breathing is most directly controlled by (the)A) heart.B) lungs.C) diaphragm.D) conscious thought
Question
Breathing is most directly controlled by (the)A) heart.B) lungs.C) diaphragm.D) conscious thought
Solution
The correct answer is C) diaphragm. The diaphragm is a large, dome-shaped muscle located at the base of the lungs. Breathing starts when you inhale air into the lungs. This action is driven by the diaphragm, which contracts and flattens, creating a vacuum that pulls air into the lungs. When you exhale, the diaphragm relaxes and the air is pushed out of the lungs. Therefore, the diaphragm most directly controls breathing.
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