Passmed Respiratory

Question 1

Which part of the brain inhibits insipiration?

Answer 1

Pneumotaxic centre, found in upper pons

Question 2

Which part of the brain stimulates insipiration?

Answer 2

Apneustic centre in lower pons, which activates and prolongs inspiration.

Question 3

What is the role of the ventral group?

Answer 3

Located in the medulla for forced vnoounary expiration.
-> it can be depressed by opiates

Question 4

What is the role of the dorsal group?

Answer 4

Located in the nucleus tractus solitaris to initiate respiration
-> can be depressed by opiates

Question 5

What do the peripheral chemoreceptors respond to?

Answer 5

Increased pCO2 and H+ in arterial blood

Question 6

What do central chemoreceptors respond to?

Answer 6

Levels of H+ in the rain interstitial fluid

Question 7

What do the stretch receptors initiate?

Answer 7

Reduced respiratory rate

Question 8

What do irritant receptors stimulate?

Answer 8

They cause bronchospasm