Physiology

at a Glance

Jeremy P. T. Ward, Roger W. A. Linden

Multiple Choice: Chapter 32 Control of breathing

Question 32.1 In the control of breathing

A afferents from the stretch receptors feed into the pneumotaxic centre in the pons to modulate breathing
B when expiratory neurones fire they inhibit the activity of inspiratory neurons
C voluntary control of breathing is possible because motor neurones from the cerebral cortex directly innervate respiratory group neurones in the medulla, altering their activity
D juxtapulmonary receptors detect fluid in the alveolar walls to cause an increased rate of breathing and an increase of both heart rate and blood pressure