ACSM-EP Musculoskeletal Anatomy

Question 1

During the ascent phase of a barbell back squat, which muscle is the primary hip extensor?

Accepted Answer

Gluteus maximus

Answer

The gluteus maximus is the primary hip extensor and drives the hips upward out of the squat bottom position.

Question 2

A client performs a lat pulldown, pulling the bar from overhead down to the upper chest. Which shoulder joint action is the latissimus dorsi producing?

Accepted Answer

Adduction and extension

Answer

Pulling the arms from overhead down toward the body is shoulder adduction and extension, the main actions of the latissimus dorsi.

Question 3

Which of the following muscles is NOT part of the rotator cuff group?

Accepted Answer

Deltoid

Answer

The deltoid is a large superficial shoulder muscle and is not one of the four rotator cuff (SITS) muscles.

Question 4

The hamstring muscles (biceps femoris, semitendinosus, semimembranosus) cross both the hip and knee. Which combination of actions do they produce?

Accepted Answer

Knee flexion and hip extension

Answer

Because they cross behind both joints, the hamstrings flex the knee and extend the hip.

Question 5

Which muscle pair is primarily responsible for ankle plantar flexion during a standing calf raise?

Accepted Answer

Gastrocnemius and soleus

Answer

The gastrocnemius and soleus form the triceps surae, the primary plantar flexors via the Achilles tendon.

ACSM Practice Test

ACSM Practice Test

ACSM-EP Musculoskeletal Anatomy