Muscle Review

Psoas Major

• O: Lumbar Vert.

• I: Femur

• A: Flexes thigh

Iliacus

• O: Ilium

• I: Femur

• A: Flexes Thigh

Gluteus Maximus

• O: Sacrum, Coccyx, and ilium

• I: Femur, Facia

• A: Extends thigh

Gluteus Medius

• O: Ilium

• I: Femur

• A: Abducts, rotates thigh medial

Adductor Longus

• O: Pubic Bone

• I: Posterior of Femur

• A: Adducts thigh

Adductor Magnus

• O: Ischium

• I: Femur

• A: Adducts thigh, rotates thigh laterally

Gracilis

• O: Pubis

• I: Tibia

• A: Adducts thigh, rotates lower limb medially

Sartorius

• O: Ilium

• I: Tibia

• A: Flexes leg, abducts thigh, rotates thigh laterally (Gum on shoe)

• *Longest muscle

Biceps femoris

• O: Ischium, femur

• I: Tibia, fibula

• A: Flexes leg, extends thigh

• *1 of 3 Hamstring

Semitendinosus

• O: Ischium

• I: Tibia

• A: Flexes Leg, extends thigh

• *2 of 3 Hamstring

Semimembranosus*

• O: Ischium

• I: Tibia

• A: flexes leg, extends thigh

• *3 of 3 hamstring

Rectus Femoris * Quadriceps (¼)

• O: Ilium

• I: Patella leading to tibia

• A: Extends leg at knee

• *Antagonist of hamstrings

Vastus Lateralis (2/4)

• O: Posterior of Femur

• I: Patella leading to tibia

• A: Extends leg at knee

Vastus Medialis (3/4)

• O: Medial surface of Femur

• I: Patella leading to tibia

• A: Extends leg at knee

Vastus Intermedius* (4/4)

• O: Anterior surface of the femur

• I: Patella leading to tibia

• A: Extends leg at knee

Tibialis Anterior

• O: Lateral surface of tibia

• I: Tarsal bones (cuneiform) 1st metatarsal

• A: Dorsiflexion and inversion of foot

Gastrocnemius

• O: Femur

• I: Posterior surface of the Calcaneus

• A: Plantar flexion of foot, flex knee

My wife and I working out.

Soleus

• O: Fibula and Tibia

• I: Posterior surface of calcaneus

• A: Plantar flexion of foot

Fibularis Longus

• O: Tibia and Fibula

• I: Tarsals and metatarsals

• A: Plantar flexion,

• * Extensor Digitorium