The apneustic center is involved ina. inhibition of the pneumotaxic area.b. stimulation of DRG.c. stimulation of the pneumotaxic area.d. inhibition of VRG.
The apneustic center is involved ina. inhibition of the pneumotaxic area.b. stimulation of DRG.c. stimulation of the pneumotaxic area.d. inhibition of VRG.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Question
The apneustic center is involved in
a. inhibition of the pneumotaxic area.
b. stimulation of DRG.
c. stimulation of the pneumotaxic area.
d. inhibition of VRG.
Expert Solution
Step 1
The apneustic center is situated in the lower pons, underneath the medulla. The apneustic center is responsible for sending stimulus for inspiration that causes long and deep breaths. It is vital for controlling the intensity of breathing. . When the apneustic center is stimulated, the firing rate of the inspiratory muscles exhibits a gradual rise.
Step 2
The apneustic center stimulates the inspiratory neurons of the dorsal root ganglion(DRG). The DRG is important for initiating inspiration and thus controls respiration.
Hence, the correct option is b.
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