Answered

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What completes the sentence?

Breathing:
A. is controlled by muscles in the diaphragm and trachea.
B. is the movement of air into and out of the lungs.
C. produces energy to fuel the body.
D. is the exchange of oxygen for carbon monoxide in the lungs.

Sagot :

GinnyAnsweridn

Final answer:

Breathing is a two-step process involving the diaphragm. The brain stem regulates breathing to maintain blood pH balance.


Explanation:

How Breathing Occurs

Inhaling is an active process primarily due to the contraction of the diaphragm. When the diaphragm contracts, it causes the thoracic cavity to expand, lowering air pressure in the lungs and allowing air to rush in.

Control of Breathing is regulated by the brain stem, which monitors carbon dioxide levels and adjusts breathing rate accordingly to maintain blood pH balance.

Regular rhythmic contractions of the diaphragm are controlled by the autonomic nervous system, ensuring efficient breathing.


Learn more about Breathing process and control here:

https://brainly.com/question/35915658


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