Wk 7 - LE 14: Cardiovascular (blood, circulation and gas exchange)

Question 1

Average blood volume for females

Answer 1

70 ml/kg

Question 2

Average blood volume for males

Answer 2

75 ml/kg

Question 3

Most blood is in…

Answer 3

veins and venules (50%)

Question 4

_____ and ______ are central to control of blood volume and long term regulation of blood pressure

Answer 4

Kidneys and hypothalamus

Question 5

Does endurance training increase or decrease blood volume?

Answer 5

Increases

Question 6

The haematocrite (RBC) equal ____% of blood

Answer 6

45%

Question 7

Saturation of oxygen arterial blood (%SaO2) is ____%

Answer 7

97-99%

Question 8

Concentration of oxygen in arteries (CaO2) is ____ %

Answer 8

19-21%

Question 9

Most oxygen exchange occurs across walls of _______

Answer 9

capillaries

Question 10

The total uptake of oxygen is equal to the product of the cardiac output and the arterial-venous oxygen content difference is known as the…?

Answer 10

Fick equation / principle

Question 11

VO2 = Q x (CaO2 - CvO2 ) is …

Answer 11

The Fick equation

Question 12

How do you calculate arterial O2 delivery?

Answer 12

= Q x CaO2

Question 13

What’s the equation for CaO2?

Answer 13

[Hb] x O2/Hb

Question 14

We circulate our entire blood volume every _______

Answer 14

minute

Question 15

About _____% of the arterial blood volume is oxygen

Answer 15

20%

Question 16

Factors that influence arterial O2 concentration…

Answer 16

Sex, blood diseases, altitude, dehydration, EPO, etc.

Question 17

Things that influence blood volume are…

Answer 17

Training, etc

Question 18

Blood volume will alter maximum rates of … (3)

Answer 18

1) CO
2) arterial O2 delivery
3) O2 consumption