Muscle Locations (2)

Arm, Forearm, Abdominal, Hip & Gluteal, Thigh, Hamstring, Lower Leeg

This muscle is on the front of the upper arm and flexes the elbow.

Biceps brachii

This muscle lies underneath the biceps and also flexes the forearm.

Brachialis

This muscle runs along the forearm (thumb side) and assists with elbow flexion.

Brachioradialis

This large muscle on the back of the upper arm extends the elbow.

Triceps brachii

These muscles run along the front of the forearm and flex the fingers.

Flexor digitorum (superficialis and profundus)

This muscle is on the back of the forearm and extends the fingers.

Extensor digitorum

This muscle runs vertically along the abdomen and is known as the “six-pack.”

Rectus abdominis

These muscles run diagonally on the sides of the abdomen and help twist the trunk.

Internal and External Obliques

This deep abdominal muscle wraps around the midsection like a corset and stabilizes the core.

Transverse abdominis

These muscles are located between the ribs and help with breathing.

Intercostals (Internal and External)

This is the large buttock muscle that extends and rotates the thigh.

Gluteus maximus

This long, thin muscle runs down the inner thigh and adducts the leg.

Gracilis

This long, strap-like muscle runs diagonally across the thigh from the hip to the knee.

Sartorius

This muscle is in the front center of the thigh and extends the knee.

Rectus femoris

This muscle lies on the outer thigh and extends the knee.

Vastus lateralis

This muscle lies on the inner thigh and extends the knee.

Vastus medialis

This muscle is on the back of the thigh and helps flex the knee and extend the hip.

Biceps femoris

This hamstring muscle is medial and extends the hip while flexing the knee.

Semitendinosus

This hamstring muscle lies deep and medial; it also extends the hip and flexes the knee.

Semimembranosus

This muscle runs down the front of the shin and flexes the foot upward (dorsiflexion).

Tibialis anterior

This calf muscle forms the bulge of the lower leg and points the toes (plantar flexion).

Gastrocnemius

This muscle lies deep to the gastrocnemius and assists in plantar flexion.

Soleus

This muscle is on the lateral side of the lower leg and everts the foot.

Fibularis (Peroneus) longus