Gym Trainer Anatomy & Physiology 2

Question 1

What happens to heart rate and stroke volume during moderate-intensity aerobic exercise?

Accepted Answer

Both increase

Answer

During aerobic exercise, both heart rate and stroke volume increase to deliver more oxygen to working muscles.

Question 2

Which type of muscle fiber has the highest oxidative capacity and fatigue resistance?

Accepted Answer

Type I (slow-twitch)

Answer

Type I (slow-twitch) fibers have the highest mitochondrial density and are most resistant to fatigue.

Question 3

The hamstrings group does NOT include which muscle?

Accepted Answer

Gracilis

Answer

The gracilis is an adductor muscle of the inner thigh, not part of the hamstring group.

Question 4

What is the primary role of the core musculature during heavy compound lifts?

Accepted Answer

Spinal stabilization and force transfer

Answer

The core acts as a rigid cylinder to stabilize the spine and transfer force between the upper and lower body.

Question 5

Which anatomical plane divides the body into left and right halves?

Accepted Answer

Sagittal plane

Answer

The sagittal plane divides the body into left and right portions and includes flexion/extension movements.

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