Muscular System Exam

Front

What is the action of the extensor digitorum longus?

Back

Extension of the lateral four toes and dorsiflexion of the foot.

Front

Which muscle lies deep to the biceps brachii and forms the floor of the cubital fossa?

Back

Brachialis.

Front

What is the primary action of the extensor pollicis longus and brevis muscles?

Back

Extend the joints of the thumb.

Front

Which muscle is fan-shaped and lies between the gluteus maximus and the gluteus minimus?

Back

Gluteus medius.

Front

What is the action of the Extensor Digitorum?

Back

Extension of the digits at the interphalangeal and metacarpophalangeal joints.

Front

What is the function of the biceps brachii?

Back

Flexion of the elbow and supination of the forearm.

Front

What is the role of the triceps brachii?

Back

Extension of the elbow.

Front

What muscle is responsible for the abduction of the arm?

Back

Deltoid.

Front

What is the primary action of the pectoralis major?

Back

Adduction and medial rotation of the arm.

Front

What is the function of the rectus abdominis?

Back

Flexion of the vertebral column.