Quiz 5-7 (2)

Question 0

During incremental exercise to exhaustion, aterial-venous O2…

Answer 0

Increases steadily

Question 1

The arterial-venous O2 is used to…

Answer 1

Determine oxidative phosphorylation that occurs in a tissue

Question 2

VO2 max is determined using…

Answer 2

The Fick equation (cardiac output x a-vO2diff)

Question 3

With endurance training, total RBC volume…

And myoglobin…

Answer 3

Increases

Increases by about 75%

Question 4

During small muscle mass exercise, what limits performance?

Answer 4

Local perfusion of muscle- limits O2 delivery

Question 5

The oxygen carrying capacity of an endurance athlete is:

Answer 5

Relatively lower per unit volume (ml) of blood compared to trained individual

Question 6

Increased stroke volume occurs during exercise through…

Answer 6

Increased left ventricular contractility

Increased venous return

Question 7

What adaptation at the muscle level occurs to the vasculature with endurance exercise?

Answer 7

Increased capillary density due to increases in capillary tortuosity and branching

Question 8

Main mechanisms that account for increased whole body VO2max:

Answer 8

Increased cardiac output and capillary density