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CVPR Pulmonary (Exam 3) > Control of Respiration > Flashcards

Flashcards in Control of Respiration Deck (19):
1

The respiratory rhythm is generated in the ______.

medulla

2

A likely candidate for the rhythm generator is the _______, and specifically an area called the pre-Botzinger complex.

rostral ventrolateral medulla

3

A likely candidate for the rhythm generator is the rostral ventrolateral medulla, and specifically an area called the _______.

pre-Botzinger complex

4

Peripheral chemoreceptors are divided into two groups, the _____ and ______.

carotid; aortic chemoreceptors

5

The carotid chemoreceptors are stimulated by?

1. decreases in arterial PO2
2. increases in PCO2
3. decreases in arterial pH

6

The aortic chemoreceptors are stimulated by?

1. decreases in arterial PO2
2. increases in PCO2

7

The most important function of the carotid bodies is to sense the level of ____.

O2

8

There are no central chemoreceptors for _____.

oxygen

9

The central chemoreceptors are sensitive to _____.

PCO2

10

Inputs from the _____ are important for voluntary control of breathing and essential for speaking, singing, sniffing, coughing and expulsive efforts.

cortex

11

Inputs from the cortex are important for?

voluntary control of breathing, speaking, singing, sniffing, coughing and expulsive efforts

12

There are also inputs from the _____ and the ______, which can influence the pattern of breathing in emotional states.

limbic system; hypothalamus

13

There are also inputs from the limbic system and the hypothalamus, which can influence the pattern of breathing in _______.

emotional states

14

What is the pons' role in breathing?

modification and the fine control of the respiratory rhythm

15

What is a pulmonary stretch receptor?

a receptor in the airway smooth muscle that activates by lung distention to provide the inflation reflex (inhibit inspiration during sustained inflation)

16

What are pulmonary irritant receptors?

receptors that lie between epi cells activated by irritants that cause hyperpnea and bronchoconstriction

17

What are Juxtapulmonary capillary (Type J) receptors?

receptors in or near the walls of the pulmonary capillaries that are activated by an increase in pulmonary interstitial fluid to cause apnea, hypotension, and bradycardia

18

Nose and upper airway receptors respond to ______ to cause _____.

chemical and mechanical stimulation/irritants; sneezing, swallowing, cough, laryngeal closure, and bronchoconstriction

19

The most important arterial baroreceptors are in the ______ and the _____.

carotid sinus; aortic arch