Levels of which of the following are responsible for regulating respiratory activities under normal conditions?
During forced breathing, which of the following occurs during inhalation?
A)The diaphragm and external intercostal muscles relax.
B)The DRG is inhibited.
C)The expiratory center of the VRG is active.
D)The inspiratory center of the VRG is inhibited.
E)The expiratory center of the VRG is inhibited.
An increase in the of arterial blood may result in respiratory centers acting to
A)decrease the rate of breathing.
B)increase the rate of breathing.
C)decrease pulmonary ventilation.
D)increase the amount of air in the anatomic dead space.
E)decrease the vital capacity.
Centers in which of the following adjust the respiratory rate and depth of respiration in response to sensory stimuli, emotional states, or speech patterns?