Blood Pressure

Question 1

Is laminar blood flow heard on a stethoscope?

Answer 1

No

Question 2

How is MAP calculated?

Answer 2

(2x diastolic + systolic)/3

Question 3

What is the normal range of MAP?

Answer 3

70 - 105 mm Hg

Question 4

What MAP is needed to perfuse the coronary arteries, brain, and kidneys?

Answer 4

at least 60mmHg

Question 5

Where are the two groups of baroreceptors?

Answer 5

aortic arch

carotid sinus

Question 6

What do carotid baroreceptors signal to the medulla via?

Answer 6

CNIX

Question 7

What do aortic baroreceptors signal to the medulla via?

Answer 7

CNX

Question 8

What happens to MAP when someone stands up and what does this do?

Answer 8

decreases, reduces the rate of firing of baroreceptors, increasing sympathetic stimulation and therefore heart rate

Question 9

What is postural hypertension the result of?

Answer 9

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

Question 10

What happens to baroreceptor firing if high blood pressure is sustained?

Answer 10

decreases

Question 11

What controls blood pressure in the longer term?

Answer 11

control of blood volume