Orbicularis Oculi

Temporalis

Location: covers temporal bone
Origin: temporal bone
Insertion: Mandible
Action: closes jaw

Masseter

Location: covers lateral jawbone(mandible)
Origin: Zygomatic arch
Insertion: mandible
Action: closes jaw

Sternocleidomastoid

Location: anterolateral neck deep to Platysma
Origin: sternum & clavicle
Insertion: mastoid process of Temporal bone
Action: Together-flex head; alone-turn head

Pectoralis Major

Location: upper chest
Origin: clavicle, anterior sternum &costal cartilages of ribs 1-6; aponeurosis of external oblique
Insertion: greater tubercle on lateral humerus
Action: adducts, flexes & medially rotates arm

Biceps Brachii

Location: anterior arm; has 2 heads
Origin: short head- coracoid proces of scapula; long head- capsule of joint
Insertion: radial tuberosity of proximal/medial radius
Action: flexes forearm at elbow; supinates forearm

Flexor Carpal Radialis

Location: anterior forearm
Origin: medial epicondyle of distal/medial humerus
Insertion: base of metacarpals II&III
Action: flexes wrist & abducts hand

Flexor Carpal Ulnaris

Location: anterior forearm; medial to palmaris longus
Origin: medial epicondyle of distal medial humerus & olecranon process of ulna
Insertion: base of metacarpal V
Action: flexes wrist & adducts hand

Rectus abdominus

Location: medial superficial muscle of abdominal region, underneath aponeurosis
Origin: pubic crest & symphysis
Insertion: xiphisternum & costal cartilages of ribs 5-7
Action: flexes vertebral column; depresses ribs; stabilizes pelvis

Iliacus

Origin: ilium
Insertion: with psoas major into femur
Action: Flexes and rotates thigh laterally at the hip joint; flexes vertebral column (same as psoas major)

Adductor Longus

Location: medial thigh
Origin: medial pubis
Insertion: linea aspera of femur
Action:adducts, medially rotates thigh, & flexes thigh at hip

Rectus Femoris

Location: superficial muscle of anterior thigh (quadriceps) Origin: anterior/inferior iliac spine & superior acetabulum
Insertion: tibial tuberosity
Action: extends knee & flexes thigh at hip

Sartorius

Location: runs obliquely aross anterior thigh from hip to knee
Origin: anterior/superior iliac spine
Insertion: medial/proximal tibia
Action: flexes & laterally rotates thigh; flees knee

Tibialus Anterior

Location: superficial/ anteriolateral leg, parallels tibial crest
Origin: lateral condyle & proximal 2/3 of tibia; interosseus membrane
Insertion: inferior surface of tarsal and metatarsal
Action: dorsiflexion & inverts foot

Extensor Hallicus Longus

ORIGIN: Midddle two quarters of the anterior surface of te fibula.

INSERTION: Base of the distal phalanx of the great toe.

ACTION: Extends the metatarsalphalangeal & interphalangeal joints of the great toe. Assists in ankle inversion of the foot and dorsiflexion of the ankle

Extensor digitorum longus

ORIGIN: Middle 3/5 of posterior body of the tibia.

INSERTION: Bases of the distal phalanges of 2nd through 5th digits.

ACTION: Flexes proximal and distal interphalangeal joints of digits 2 through 5 & assists in ankle planter flexion and foot inversion.