Deck 42: Regulation of Respiration

Question 1

Answer 1

A

Question 2

A stroke that destroys the respiratory area of the medulla would be expected to lead to which of the following?

A)Immediate cessation of breathing
B)Apneustic breathing
C)Ataxic breathing
D)Rapid breathing (hyperpnea)
E)Breathing would remain normal

Answer 2

A

Question 3

Five hours after an uneventful knee surgery, a conscious 50-year-old woman has minor heart pain and a decrease in systolic blood pressure from 110 to 90 mm Hg. Arterial blood gas analysis on her breathing room air shows: * $\mathrm { pH } = 7.30$
* $\mathrm { pCO } _ { 2 } = 52 \mathrm {~mm} \mathrm { Hg }$
* $\mathrm { pO } _ { 2 } = 58 \mathrm {~mm} \mathrm { Hg }$ Which of the following is the most likely cause of these findings?

A)Alveolar hypoventilation
B)Cardiac failure
C)Hypoxia due to anesthetic gases
D)Pulmonary hypertension

Answer 3

Alveolar hypoventilation

Question 4

Question 5

Question 6

Question 7

Which set of findings occurs with carbon monoxide inhalation?

Question 8

Question 9

Where are the afferent (sensory) endings for the Hering-Breuer reflex located?

A)Carotid arteries
B)Alveoli
C)External intercostals
D)Bronchi and bronchioles
E)Diaphragm

Question 10

Question 11

Which of the following conditions would be expected to stimulate the arterial chemoreceptors?

A)Mild anemia
B)Normal breathing
C)Hypoxia due to ascent to high altitude
D)Hyperventilation
E)Exposure to carbon monoxide

Question 12