Major Muscles of the Body - POSTERIOR

Gluteus maximus

Largest buttock muscle; extends and rotates the hip.

Adductor muscle

Group of muscles on the inner thigh that bring the legs together.

Gastrocnemius

Calf muscle; helps with walking, running, and jumping.

Latissimus dorsi

Large back muscle; aids in pulling and arm movement.

Deltoid

Shoulder muscle; lifts the arm in all directions.

Semitedinosus

Part of the hamstrings; helps extend the hip and bend the knee.

Soleus

Lower calf muscle; works with the gastrocnemius to point the foot downward.

Biceps femoris

Another hamstring muscle; bends the knee and extends the hip.

Triceps brachii

Back of the upper arm; extends the elbow.

External oblique

Side abdominal muscle; twists and flexes the torso.

Gluteus medius

Buttock muscle; stabilizes the pelvis and moves the leg sideways.

Trapezius

Upper back and neck muscle; moves and stabilizes the shoulder blades.

Splenius capitus

Back of the neck muscle; rotates and extends the head.

Occipitalis

Muscle at the back of the skull; moves the scalp.

Rhombus

Muscles between shoulder blades; retract the scapula.

Infraspinastus

Shoulder blade muscle; rotates the arm outward.

Calcaneal tendon

Connects calf muscles to the heel; helps with walking and jumping.