Cathy develops a tumor in her brainstem that puts pressure on the respiratory centers. Her doctor notices that control of her diaphragm is abnormal and irregular movements occur during inspiration. Responses to sensory input are delayed and abnormal. Which specific respiratory center must be receiving pressure from the tumor?

A)The dorsal respiratory group
B)The ventral respiratory group
C)The pontine respiratory group
D)The diencephalon

Which specific respiratory center must be receiving pressure from the tumor?

A)The dorsal respiratory group

Explanation:

The Dorsal Respiratory group consists mainly of inspiratory neurons and is responsible for timing of the respiratory cycle. They regulate the rate of respiration. When the doctor notices that control of her diaphragm is abnormal and irregular movements occur during inspiration, we can think of dorsal respiratory group, because these neurons send impulses to the motor nerves of diaphragm and external intercostal muscles.