Flashcards in musch 4 Deck (25):
what kind of receptors are the baroreceptors?
mechano and stretch receptors
where are baroreceptors ?
aortic arch and carotids bodies
where are chemoreceptors in the heart?
vasoconstriction does what to SVR?
how to increase blood pressure?
increase venous return
increase stroke volume
how to decrease blood pressure?
the body doesn't have a good mechanism for decreasing pressure
what is a result of hypertension on the heart?
hypertrophy of he left ventricle
what are the fast-responding-sensors that detect rapid changes in pressure?
what are the slow-responding receptors that sense rapid changes in pressure?
neurogenic factors (sympathetic)
autoregulation no completely understood
neurogenic factors receive input from:
3. muscle receptors
4. trigeminal nerves
what are the three vasoconstrictors?
what happens when the beta-1 receptors are stimulated?
increased heart rate
what happens when the beta-2 receptors are stimulated in the periphery?
what are the products of metabolism?
1. lactic acid->lactate->H+
3. Pi - deprotonated phosphate
4. adenosine (*big dog)
what can the products of metabolism stimulate?
what does EDCF stand for?
endothelial derived constricting factors
what does EDRF stand for?
endothelial derived relaxing factors
what EDCF is the body's last line of defense
where are eNOS (endothelial) found?
highly oxidative muscle (slow twitch)
where are nNOS (neuronal) found?
fast twitch muscle
where are iNOS (inducible) found?