Question

The diaphragm is controlled by peripheral nerve roots​ ________ through​ ________.

A.C-3; C-7

B.C-1; C-7

C.C-1; C-5

D.C-3; C-5

Answer 1

The diaphragm is controlled by peripheral nerve roots C-3 through C-5. Option D is the answer.

Step-by-step explanation:

The diaphragm, the primary muscle responsible for breathing, is innervated by the phrenic nerve. The phrenic nerve receives contributions from the cervical nerve roots C-3, C-4, and C-5. Therefore, the correct answer is option D, "C-3; C-5."

In the context of this question, the phrenic nerve originates from the spinal cord in the cervical region and travels down to the diaphragm, providing the necessary motor and sensory signals for respiratory function. Damage or impairment to the C-3 to C-5 nerve roots or the phrenic nerve can affect the function of the diaphragm, leading to respiratory difficulties.

Option D is the answer.