Module 6

Question 1

Precapillary Sphincter

Answer 1

ring of smooth muscle that encircles capillary and controls its diameter (controls amount of blood flow)

Question 2

Hypertension

Answer 2

140/90 (over)

Question 3

Hypotension

Answer 3

100/60 (less than)

Question 4

Mean Arterial Pressure

Answer 4

average force exerted by blood against arterials walls during cardiac cycle

Question 5

MAP Equation

Answer 5

120/80
- DBP + (0.333 x (SBP - DBP))
- 80 + (0.333 x 40)
- 80 + 13
= 93 mmHg

Question 6

Hypertension (process)

Answer 6

due to atherosclerosis (plaque) or thickening of connective tissue of artery due to clogging of fat (plaque)
- can cause blood clots travelling to other vessels of body and can reach heart (causing heart attack)

Question 7

How to prevent hypertension

name as much as you can

Answer 7

• regular physical activity
• weight loss
• stress management
• cessate smoking
• limit sodium, alcohol
• proper intake of potassium, calcium and magnesium
• medication (beta/alpha blocker)

Question 8

Blood Pressure Equation

Answer 8

BP = Cardiac Output x Total Peripheral Resistance

TPR reduces during exercise

Question 9

SBP first few mins in steady state

Answer 9

140-160 mmHg

Question 10

SBP in max graded exercise

Answer 10

over 200mmHg

Question 11

Rate Pressure Product and Equation

Answer 11

• Indirect index of myocardial oxygen consumption (VO2 of myocardium)
  Associated significantly with both morbidity and mortality

Equation = SBP x HR

20,000mmHg for healthy and below 16,000 is not good