During tidal breathing, respiratory _______ neurons in the medulla _______ just before the start of an _______.

Question

Quizplus · Accepted Answer

During tidal breathing, the respiratory motor neurons in the medulla increase their firing rate just before the start of an inhalation. This results in the contraction of the diaphragm and intercostal muscles, which expands the thoracic cage, and air is drawn into the lungs. Choice A is incorrect because the respiratory motor neurons increase their firing rate just before the start of inhalation and not exhalation. Choice B is incorrect because during tidal breathing, the respiratory motor neurons increase their firing rate just before the start of inhalation and not decrease their firing rate. Choice D and E are incorrect because during tidal breathing, it is the respiratory motor neurons that are involved in the control of breathing, and not the sensory neurons.

During Tidal Breathing, Respiratory _______ Neurons in the Medulla _______

During Tidal Breathing, Respiratory _ Neurons in the Medulla _