Bllod Pressure Regulation

Question 1

Three categories of blood pressure regulators

Answer 1

Rapidly Responding (5 seconds to 1 minute)
Less Rapid (1 minute- 30 minutes)
Slowly Responding (Days to Months)

Question 2

The rapidly responding systems are:

Answer 2

Baroreceptors
Chemoreceptors
Regulation of stroke volume by arterial pressure
Cerebral ischemia induced response

Question 3

baroreceptos do what

Answer 3

sense pressure changes

Question 4

baroreceptors provide info to CNS about

Answer 4

mean arterial pressure, pulse pressure, heart rate

Question 5

what carries nerve activity from baroreceptor to CNS?

Answer 5

carotid sinus

Question 6

Decrease in carotid sinus pressure leads to what impact on systemic arterial pressure

Answer 6

decrease in systemic arterial pressure

Question 7

Increase in pulse pressure leads to decrease in arterial pressure

Answer 7

true

Question 8

Do baroreceptors set pressure or buffer it?

Answer 8

buffer it

Question 9

Why do baroreceptors reset?

Answer 9

prevents the reflex from functioning as a control system for changes that last more than a day

Question 10

What level of arterial pressure reduction activates chemoreceptors?

Answer 10

below 80 so these only defend against severe hypotension

Question 11

Reduction of arterial pressure below what level activates an intense sympathetic and parasympatheitic response?

Answer 11

60. sympathetic prevails. Last ditch response to maintain blood flow to the brain.

Question 12

What are the less rapidly responding systems

Answer 12

Low pressure receptor-mediated reflex mechanisms, ANP, Capillary fluid transfer, vascular stress relaxation, RAAS