Regulation of Respiration Quiz

Which part of the brainstem is primarily responsible for controlling respiration?

• Dorsal respiratory group (DRG)

• Ventral respiratory group (VRG)

• Pontine respiratory group (PRG)

• Cerebral cortex

What role do chemoreceptors play in respiration?

• They directly control the diaphragm.

• They sense changes in blood pH and gas concentrations.

• They regulate the heart rate.

• They send signals to the cerebral cortex.

Which group sends signals to the diaphragm to control breathing?

• Pontine respiratory group (PRG)

• Dorsal respiratory group (DRG)

• Ventral respiratory group (VRG)

• Chemoreceptors

How do chemoreceptors respond when blood pH is low?

• They decrease respiration.

• They increase respiration.

• They have no effect on respiration.

• They increase heart rate.

Which respiratory group receives signals from the cerebral cortex?

• Ventral respiratory group (VRG)

• Dorsal respiratory group (DRG)

• Pontine respiratory group (PRG)

• Chemoreceptors

What is the function of the pontine respiratory group (PRG)?

• It directly controls the diaphragm.

• It sends stimulatory or inhibitory signals to the DRG.

• It senses changes in blood pH.

• It regulates heart rate.

Which of the following is a central sensor of the autonomic nervous system (ANS) involved in respiration?

• Chemoreceptors

• Ventral respiratory group (VRG)

• Diaphragm

• Cerebral cortex

• Respiration decreases.

• Respiration increases.

• Heart rate decreases.

• Blood pressure increases.

Which group is responsible for sending signals to the VRG?

• Pontine respiratory group (PRG)

• Dorsal respiratory group (DRG)

• Chemoreceptors

• Cerebral cortex

What is the primary function of the dorsal respiratory group (DRG)?

• It directly controls the diaphragm.

• It sends signals to the VRG.

• It regulates blood pressure.

• It senses changes in blood pH.