Pneumotaxic centers in the pons
A)inhibit the apneustic centers.
B)promote passive or active exhalation.
C)receive input from the hypothalamus and cerebrum.
D)modify respiratory rate and depth.
E)All of the answers are correct.
The Hering-Breuer reflex
A)functions to increase ventilation with changes in blood pressure.
B)alters pulmonary ventilation when the PO₂ changes.
C)alters pulmonary ventilation when the PCO₂ changes.
D)protects the lungs from damage due to overinflation.
E)is an important aspect of normal,quiet breathing.
Blocking afferent action potentials from the chemoreceptors in the carotid and aortic bodies would interfere with the brain's ability to regulate breathing in response to
A)changes in PCO₂.
B)changes in PO₂.
C)changes in pH.
D)changes in blood pressure.
E)changes in PCO₂,PO₂,ₐnd pH.
Damage to the phrenic nerves would
A)increase respiratory rate.
B)increase the tidal volume.
C)force reliance on costal breathing.
D)result in greater pressure differences between the lungs and the outside air.
E)have little effect on ventilation.