arterial blood pressure

Question 1

what is blood pressure

Answer 1

the outwards pressure exerted by the blood on blood vessel walls

Question 2

systemic arterial blood presseure

Answer 2

is the pressure exerted by the blood on the walls of the aorta and systemic arteries when the heart contracts

Question 3

systemic diastolic arterial blood pressure

Answer 3

is the pressure exerted by the blood on the walls of the aorta and systemic arteries when the heart relaxes

Question 4

hypertension

Answer 4

140/90mmHg or higher and daytime average of 135/85 mmHg or higher

Question 5

pulse pressure

Answer 5

difference between systolic and diastolic pressure

normally 30-50mmHg

Question 6

laminar flow

Answer 6

central flow (not audible through a stethoscope)

Question 7

fifth korotkoff sounds

Answer 7

point at which sound disappears

Question 8

first appearance of sound

Answer 8

systolic blood pressure

Question 9

pressure gradient =

Answer 9

mean arterial pressure - central venous (right atrial) pressure

Question 10

what is mean arterial pressure

Answer 10

the evragae arterial blood pressure during a single contraction and relaxation

Question 11

diastolic (relaxation) is

Answer 11

twice as long as contraction (systolic)

Question 12

MAP=

Answer 12

[(2xdiastolic pressure) + systolic pressure] / 3

Question 13

normal arterial blood pressure

Answer 13

140/90

Question 14

MAP of at least 60 mmHg is needed to

Answer 14

perfuse the coronary arteries, brain and kidneys

Question 15

systemic vascular resistance

Answer 15

the sum of resistance of all systemic vascular resistance

Question 16

the major resistance vessels

Answer 16

arterioles

Question 17

baroreceptor reflex

Answer 17

short term regulation of mean arterial blood pressure

Question 18

the baroreceptor reflex is important in

Answer 18

moment to moment regulation of arterial blood pressure including prevention of postural changes

Question 19

postural hypotension

Answer 19

results from failure of baroreceptor responses to gravitational shifts in blood, when moving from horizontal to vertical position

Question 20

hypotension risk factors

Answer 20

age related
medications
certain diseases
prolonged bed rest
reduced intravascular volume

Question 21

postural hypotension

Answer 21

drop of 20 mmHg in systolic - with or without symptoms

drop of 10 mmHg with symptoms diastolic

Question 22

baroreceptors only respond to

Answer 22

acute changes in blood pressure

Question 23

hormones that regulate extracellular fluid volume

Answer 23

RAAS