During resting normal pulmonary ventilation, ALL of the following is TRUE EXCEPT:

a. excitatory signals reach the diaphragm via the phrenic nerve making it contract
b. pressure in the lungs decrease below atmospheric pressure during expiration
c. lung volume increase and pressure decreases during inspiration
d. relaxing the inspiratory group muscles induces normal quiet expiration


Ans: b. pressure in the lungs decrease below atmospheric pressure during expiration

Anatomy & Physiology

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