Cardio 6

Question 1

sphygmomanometry

Answer 1

estimates blood pressure

Question 2

normal blood pressure at rest

Answer 2

s: less than 120 and
d: less than 80

Question 3

elevated blood pressure at rest

Answer 3

s: 120-129 and
d: less than 80

Question 4

high blood pressure stage 1 at rest

Answer 4

s: 130-139 or
d: 80-89

Question 5

high blood pressure stage 2 a rest

Answer 5

s: 140+ or
d: 90+

Question 6

hypertensive crisis at rest

Answer 6

s: 180+ and/or
d: 120+

Question 7

mean arterial pressure

Answer 7

inverse of (cardiac output x peripheral resistance)

Question 8

factors that influence mean arterial blood pressure

Answer 8

blood volume, cardiac output, resistance, and distribution of blood between arterial and venous blood vessels

Question 9

small changes in blood volume occurs from…

Answer 9

ingestion of food and liquids

Question 10

changes in blood volume is resolved by…

Answer 10

kidneys

Question 11

resistance =

Answer 11

1/radius^4

Question 12

local control of arteriolar resistance

Answer 12

matches tissue blood flow to metabolic needs of the tissue

-take precedence over reflex control by CNS

Question 13

sympathetic reflexes

Answer 13

mediated by the CNS maintain mean arterial pressure and govern blood distribution for certain homeostatic needs such as temperature regulation.

Question 14

hormones

Answer 14

particularly those that regulate salt and water excretion by the kidneys, influence blood pressure by acting directly on the arterioles and by altering autonomic reflex control

Question 15

total resistance depends on..

Answer 15

radius and arrangement (series of parallel) of each vessel

Question 16

myogenic auto regulation

Answer 16

Some vascular smooth muscle has the ability to regulate its own state of contraction; an increase in blood pressure causes the vascular smooth muscle in the wall of the arteriole to stretch, which then causes the vascular smooth muscle to contract, leading to vasoconstriction

Question 17

Local control of blood flow is important in allowing…

Answer 17

individual tissues to regulate their own blood supplies

Question 18

The main determinant of resistance in the majority of arterioles is the

Answer 18

sympathetic nervous system; controls diameter with release of norepinephrine and secondary mechanism of epinephrine