ART ART Anatomy & Biomechanics 3

Question 1

Which nerve passes through the carpal tunnel?

Accepted Answer

Median nerve

Answer

The median nerve travels through the carpal tunnel beneath the flexor retinaculum.

Question 2

Which muscle is the primary antagonist to the biceps brachii during elbow flexion?

Accepted Answer

Triceps brachii

Answer

The triceps brachii is the primary elbow extensor and therefore the antagonist of the biceps brachii.

Question 3

Ankle plantarflexion exemplifies which class of lever?

Accepted Answer

Second-class lever

Answer

Plantarflexion is a second-class lever: the load (body weight) sits between the fulcrum (toes) and the effort (calf muscles).

Question 4

The erector spinae muscle group primarily performs which spinal action?

Accepted Answer

Extension and lateral flexion

Answer

The erector spinae extend the spine and, when contracting unilaterally, assist with lateral flexion.

Question 5

Which structure is most commonly involved in lateral epicondylitis?

Accepted Answer

Extensor carpi radialis brevis

Answer

The extensor carpi radialis brevis (ECRB) tendon is most commonly implicated in lateral epicondylitis.

(ART) Certified Art Provider Practice Test