Exercise Physiology

Question 0

Glycolysis splits the glucose molecule into two molecules of_____. When insufficient oxygen is available in contracting skeletal muscles, this substance is converted to ____.

Answer 0

Pyruvate

Lactate

Question 1

What circulatory changes occur during exercise

Answer 1

Increase in cardiac output
Increased blood flow in active muscles
Decreased blood flow in viscera
Initial decreased blood flow in the skin, followed by an increase as the body warms up

Question 2

Skeletal muscle can use glucose and _____as fuels

Answer 2

Free fatty acids

Question 3

NADH and FADH2 are formed during the Krebs Cycle. They pass their _____ to oxygen during the process of oxidative phosphorylation

Answer 3

Electrons

Question 4

What are the symptoms of heat stroke

Answer 4

Extreme weakness, exhaustion, headache, dizziness, nausea, profuse sweating, confusion, staggering gait, collapsing, unconsciousness

Question 5

Oxygen debt is equal to the need to restore 3 things, name them

Answer 5

1. Conversion of accumulated lactate back to glucose in the liver
2. Replenishing the muscle ATP and creatine phosphate stores
3. Replenishing the oxygen content of the muscle myoglobin