Heart part III

Question 1

hydrostatic pressure

Answer 1

pressure “stuff” is putting on walls of blood vessels

Question 2

How does kidney regulate low BP

Answer 2

senses low blood flow, releases renin–> angiotensin I –> ACE enzyme converts this to angiotensin II (vasoconstrictor)

Question 3

angiotensin II and BP regulation

Answer 3

kidney releases renin which makes this; vasoconstrictor to increase BP when BP is low

Question 4

ACE inhibitors

Answer 4

for high BP so not as much constriction (stops ACE enzyme from converting angiotensin I to II which is a vasoconstrictor)

Question 5

cardiac regulation of high BP

Answer 5

baroreceptors in aortic arch/carotid sinus–> sensory impulse to medulla oblongata–> CIC (cardiac inhibitory center)–> parasympathetic impulses to heart–> SA node stimulated–> heart rate decreases–> BP returns to normal

Question 6

what enzyme converts angiotensin I to II and why is it important

Answer 6

ACE enzyme then causes vasoconstriction to increase BP

Question 7

Beta blockers

Answer 7

lower heart rate to treat hypertension

Question 8

calcium channel blockers

Answer 8

dilate BV to treat hypertension

Question 9

diuretics

Answer 9

increase urine output lowering blood volume to treat hypertension (temporary quick fix); short term