MS

Deltoids

Muscles located in the shoulders that are responsible for abduction, flexion, and extension of the shoulder joint.

Pectoralis Major

Large, fan-shaped muscles located in the chest that are responsible for adduction, flexion, and medial rotation of the arm.

Pectoralis Minor

Thin and triangular muscles located in the chest (under Pectoralis Major) that stabilize the scapula.

Biceps Brachii

Two-headed muscles located in the upper arm that are responsible for flexion of the elbow and supination of the forearm.

Adductor

Muscles located in the inner thighs that are responsible for adduction of the hip joint.

Abductor

Muscles located in the outer thighs/hips that are responsible for abduction of the hip joint.

Gastrocnemius

Well-developed, two-headed muscles located in the calves that are responsible for plantarflexion of the ankle joint.

Rectus Abdominis

Prominent, rectangular muscles located in the abdomen that are responsible for flexion of the trunk.

External Obliques

Well-developed, diagonal muscles located on the sides of the abdomen that are responsible for flexion of the trunk, rotation, and lateral flexion.

Quadriceps Group

Well-developed, rectangular group of four muscles located in the front of the thighs that are responsible for extension of the knee joint.

Trapezius

Triangular muscles located in the upper back and neck that are responsible for elevation, depression, and retraction of the scapula.

Triceps Brachii

Prominent, three-headed muscles located in the back of the upper arm that are responsible for extension of the elbow joint.

Latissimus Dorsi

Large, broad, and flat muscles located in the lower and middle back that are responsible for adduction, extension, and medial rotation of the arm.

Hamstring Group

Well-developed group of three muscles located in the back of the thighs that are responsible for flexion of the knee joint and extension of the hip joint.

Soleus

Prominent muscles located in the calves that are responsible for plantarflexion of the ankle joint.

Gluteus Maximus

Well-developed, large, and rounded muscles located in the buttocks that are responsible for extension and lateral rotation of the hip joint.

Gluteus Medius

Well-developed, fan-shaped muscles located in the upper and outer portion of the buttocks that are responsible for abduction and medial rotation of the hip joint.