Lecture 13

Question 1

Hyperpnea vs Hyperventilation

Answer 1

Hyperpnea: Increase in ventilation where PO2/PCO2 remain normal
Hyperventilation: Increase in ventilation where PCO2 rises past normal

Question 2

3 mechanisms controlling hyperpnea

Answer 2

1. Neural feedforward
2. Neural feedback
3. Humoral feedback

Question 3

Neural feedforward

Answer 3

Knowing how much to breathe from experience

Question 4

Neural feedback

Answer 4

Metaboreceptors in muscle sense metabolite
change, send signal to brain to change breathing

Question 5

Humoral feedback

Answer 5

-Chemoreceptors in medullary (H+)
-Chemoreceptors in carotid (H+, PaO2, PaCo2)