Nerve impulses that stimulate contraction of the respiratory muscles come from the:
A)apneustic center in the pons
B)expiration center in the medulla
C)pneumotaxic center in the pons
D)inspiration center in the medulla

Question

Quizplus · Accepted Answer

The inspiration center in the medulla is responsible for initiating nerve impulses that stimulate the contraction of respiratory muscles, specifically the diaphragm and external intercostal muscles. The apneustic and pneumotaxic centers in the pons play a role in regulating the duration and rate of breathing, but do not directly stimulate muscle contraction. The expiration center in the medulla is responsible for inhibiting nerve impulses that stimulate contraction of respiratory muscles during exhalation.

Nerve Impulses That Stimulate Contraction of the Respiratory Muscles Come