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Flashcards in musch 4 Deck (25):
1

what kind of receptors are the baroreceptors?

mechano and stretch receptors

2

where are baroreceptors ?

aortic arch and carotids bodies

3

where are chemoreceptors in the heart?

carotid arch

4

vasoconstriction does what to SVR?

increases SVR

5

how to increase blood pressure?

increase venous return
increase preload
increase stroke volume

6

how to decrease blood pressure?

the body doesn't have a good mechanism for decreasing pressure

7

what is a result of hypertension on the heart?

hypertrophy of he left ventricle

8

what are the fast-responding-sensors that detect rapid changes in pressure?

arterial baroreceptors

9

what are the slow-responding receptors that sense rapid changes in pressure?

cardiopulmonary receptors

10

extrinsic regulation

neurogenic factors (sympathetic)

11

intrinsic regulation

autoregulation no completely understood

12

neurogenic factors receive input from:

1. baroreceptors
2. chemoreceptors
3. muscle receptors
4. trigeminal nerves

13

what are the three vasoconstrictors?

NE

14

what happens when the beta-1 receptors are stimulated?

increased heart rate

15

what happens when the beta-2 receptors are stimulated in the periphery?

vasodilation

16

sympathetic vasoconstriction

alpha-1 receptors

17

what are the products of metabolism?

1. lactic acid->lactate->H+
2. K+
3. Pi - deprotonated phosphate
4. adenosine (*big dog)
5. CO2

18

what can the products of metabolism stimulate?

vasodilation

19

what does EDCF stand for?

endothelial derived constricting factors

20

what does EDRF stand for?

endothelial derived relaxing factors

21

what EDCF is the body's last line of defense

endothelin

22

where are eNOS (endothelial) found?

highly oxidative muscle (slow twitch)

23

where are nNOS (neuronal) found?

fast twitch muscle

24

where are iNOS (inducible) found?

immune response

25

does cardiac or skeletal muscle have more pathways to regulate vascular control of blood floor through the organ system?

skeletal muscle