Question

Which of the following areas of the brain contain inspiratory neurons?

a) the dorsal respiratory group only
b) the ventral respiratory group only
c) both the dorsal and ventral respiratory groups
d) neither the dorsal nor ventral respiratory group

Answer 1

The areas of the brain that contain inspiratory neurons are both the dorsal and ventral respiratory groups (DRG and VRG). The DRG maintains the constant breathing rhythm, while the VRG is responsible for forced breathing.

Step-by-step explanation:

The areas of the brain that contain inspiratory neurons are both the dorsal and ventral respiratory groups (DRG and VRG). The medulla oblongata, located in the brainstem, contains these two groups. The DRG is responsible for maintaining the constant breathing rhythm by stimulating the diaphragm and intercostal muscles to contract, causing inspiration. The VRG is involved in forced breathing and stimulates accessory muscles used in forced inspiration and expiration.