Chemoreceptor Control

Central chemoreceptor

- in medulla and responds to chemical changes in the cerebrospinal fluid

- the changes are due to the chemical change in blood

- abnormal pH changes in blood convey a message to the lung to change the depth and rate of respiration to correct the imbalance

Peripheral chemoreceptor

- in aortic arch and carotid arteries

- respond first to changes in PaO₂, then to PaCO₂ and pH

Hering-Breuer reflex

-  the stretch receptors in alveoli are stimulated when the lungs are distended and inhibits inspiration to prevent over-distention of the lung

Proprioceptors

- in muscles and joints that r3spond to body movements, such as, exercise, causing an increase in ventilation

Barorecepors

- in the aortic and carotid bodies, respond to change in arterial blood pressure and cause a reflex hypoventilation or hyperventilation