12.5 Regulation of Ventilation Rate

Question 1

What are the stimuli that affect ventilation rates?

Answer 1

mechanical
chemical

Question 2

What are the chemical stimuli that affect ventilation rates?

Answer 2

increased PCO2
decreased blood pH
decreased PO2

Question 3

What are peripheral chemoreceptors?

Answer 3

specialized autonomic sensory receptors located in the aorta and the carotid arteries that monitor PCO2

Question 4

What are central chemoreceptors?

Answer 4

specialized autonomic sensory receptors located in the medullary respiratory control center that monitors PCO2 and pH of CSF

Question 5

What are the mechanical stimuli that affect ventilation rates?

Answer 5

physical stretching of lungs
irritants

Question 6

How does mechanical stretching of lungs affect ventilation rate?

Answer 6

stimulate stretch receptors that will inhibit further excitatory signals to the muscles that are involved in inspiration

Question 7

What is bronchoconstriction?

Answer 7

contraction of the smooth muscles in bronchi and larger bronchioles

Question 8

What affect do irritants have on ventilation rates?

Answer 8

cause coughing or bronchoconstriction