Mucle

Which muscle is highlighted?

• Rotator cuff

• Infraspinatus

• Teres major

• Teres minor

The two large, flat muscles (D) that cover the lower back, extend and adduct the humerus.

• Deltoid

• Triceps brachii

• Trapezius

• Latissimus dorsi

These diamond-shaped muscles (A) extend the head, elevate, depress, adduct, and stabilize the scapula.

• Deltoid

• Triceps brachii

• Trapezius

• Latissimus dorsi

These muscles (D) flex the vertebral column, rotate the trunk and bend it laterally.

• External oblique

• Internal oblique

• Rectus abdominis

• Transversus abdominis

These paired straplike muscles (A) are the most superficial muscles of the abdomen. They flex the vertebral column and compress the abdomen during defecation, childbirth, and forced breathing.

• External oblique

• Internal oblique

• Rectus abdominis

• Transversus abdominis

This fairly weak muscle (E) resides mainly in the forearm.

• Brachioradialis

• Brachialis

• Pectoralis major

• Biceps brachii

This two-headed muscle (C) bulges when the elbow is flexed.

• Brachioradialis

• Brachialis

• Pectoralis major

• Biceps brachii

This large fan-shaped muscle (B) covers the upper part of the chest. It adducts and flexes the arm.

• Trapezius

• Deltoid

• Pectoralis major

• Biceps brachii

This triangle-shaped muscle (A) forms the rounded shape of your shoulders, abducts the arm, and is a favorite injection site.

• Trapezius

• Deltoid

• Pectoralis major

• Biceps brachii

This muscle (K) flexes your neck. Some people call this the "prayer" muscle. It can also rotate the head toward the shoulder and tilt the head to the side.

• Platysma

• Sternocleidomastoid

• Occipitalis

• Trapezius