ACSM-EP Musculoskeletal Anatomy 3

Question 1

The femoral triangle contains several important structures. Which muscle forms its medial border?

Accepted Answer

Adductor longus

Answer

The adductor longus forms the medial border of the femoral triangle, while the inguinal ligament forms the superior border and the sartorius forms the lateral border.

Question 2

Which type of cartilage is found in the intervertebral discs and menisci of the knee?

Accepted Answer

Fibrocartilage

Answer

Fibrocartilage, which contains dense collagen fibers, is found in the intervertebral discs and knee menisci where compressive and tensile forces are high.

Question 3

The deltoid muscle has three heads. Which head is the primary shoulder abductor initiating movement from 0–15 degrees?

Accepted Answer

Middle deltoid

Answer

The middle (lateral) deltoid is the primary mover for shoulder abduction, working after the supraspinatus initiates the first 0–15 degrees of movement.

Question 4

Which muscle is the primary wrist extensor and originates on the lateral epicondyle of the humerus?

Accepted Answer

Extensor carpi radialis brevis

Answer

The extensor carpi radialis brevis (ECRB) is a primary wrist extensor originating from the lateral epicondyle; its overuse is a common cause of lateral epicondylitis.

Question 5

A synarthrotic joint is best characterized as:

Accepted Answer

Immovable with fibrous or bony union

Answer

Synarthrotic joints are immovable joints united by fibrous tissue or bone, such as skull sutures and the manubriosternal joint in adults.

ACSM Practice Test

ACSM Practice Test

ACSM-EP Musculoskeletal Anatomy 3