Respiratory System

Question 1

What are the 2 areas of the respiratory centre based on + what are they?

Answer 1

Function + location - medullary respiratory centre in medulla oblongata + pontine respiratory centre in the pons

Question 2

What factors may modify respirations?

Answer 2

Chemoreceptors, limbic system stimulation, proprioceptor stimulation, temp., pain, irritated airways, inflation reflex

Question 3

What causes a sudden increase in ventilation when exercise begins?

Answer 3

Neural changes that send excitatory impulses to inspiratory area in medulla oblongata

Question 4

What does the medullary respiratory centre do?

Answer 4

Control rhythm + rate of breathing

Question 5

What does the pons respiratory group do?

Answer 5

Regulate transition between breathing in + breathing out

Question 6

What are the 2 groups of the medullary respiratory centre?

Answer 6

Dorsal + ventral respiratory group

Question 7

Which respiratory group becomes active when exhalation is forceful?

Answer 7

Ventral respiratory group

Question 8

Where are the central chemoreceptors located?

Answer 8

Medulla

Question 9

Where are peripheral chemoreceptors located?

Answer 9

Aorta + carotid