PTC Exercise Physiology and Anatomy

Question 1

Which muscle is primarily responsible for knee extension?

Accepted Answer

Quadriceps

Answer

Hamstrings

Answer

Gastrocnemius

Answer

Hip flexors

Question 2

What is the term for the period when the heart ventricles are contracting and pumping blood?

Accepted Answer

Systole

Answer

Diastole

Answer

Cardiac cycle

Answer

Stroke volume

Question 3

Which energy system provides the majority of ATP during a 400-meter sprint?

Accepted Answer

Glycolytic system

Answer

Phosphagen system

Answer

Oxidative system

Answer

ATP-CP system

Question 4

What is VO2 max?

Accepted Answer

Maximum volume of oxygen the body can use per minute

Answer

Maximum heart rate during exercise

Answer

Resting oxygen consumption

Answer

Oxygen debt after exercise

Question 5

Which type of muscle fiber is best suited for endurance activities?

Accepted Answer

Type I slow-twitch

Answer

Type IIb fast-twitch

Answer

Type IIa fast-twitch oxidative

Answer

Type IIx fast-twitch

Question 6

What happens to stroke volume during aerobic exercise at moderate intensity?

Accepted Answer

It increases

Answer

It decreases

Answer

It remains unchanged

Answer

It becomes irregular