Origin: Medial wall of orbit

Insertion: Circumferentially around orbit

Action: Closes the eye

Origin: Muscle fibers surrounding the mouth

Insertion: Skin corners of mouth (modiolus)

Action: Closes or protrudes the lips

Origin alveolar process of maxilla & mandible along the pterygomandibular raphe

Insertion: Modiolus

Action: Compresses the cheeks

Blood: Facial artery

Innervation: Buccal branch of facial nerve

Origin: Zygomatic arch

Insertion: Angle of mandilble

Action: Closes lower jaw (clenches teeth)

Origin: Temporal Bone

Insertion: Coronoid process of mandible

Action: Elevates and retracts mandible

Sternocleidomastoid

Origin: Manubrium of sternum

           Medial Portion of clavicle

Insertion: Mastoid process of temporal bone

Action: Bilaterally flexes the neck

           Unilaterally rotates to opposite side

           Laterally flexes to the same side

Origin: Superior nuchal line

           Ligamentum Nuchae

           Spinous Processes C1-T12

Insertion: Lateral 1/3 of clavical

               Acrominion

               Spine of scapula

Action: Elevates scapula

           Upward rotation of scapula

           Retracts scapula

Origin: Spinous Process of T7-L5

           Sacrum

           Illac Crest

Insertion: Intertuberacular groove

Action: Adduction and medial rotation of humerous

           Extension from flexed position

Origin: Medial 1/3 of Clavicle

           Sternum

           Upper 6 Ribs

Insertion: Medial margin of Scapula

Action: Abducts Humerus

           Medially rotates Humerus

           Flexion of arm from extension

Origin: Spinous Processes of C7-T5

           Ligamentum Nuchae

Insertion: Medial Margin of Scapula

Action: Retract Scapula

Origin: Ribs 1-9

Insertion: Medial Border of Scapula (anterior side)

Action: Protract Scapula

Origin: Lateral 1/3 of Clavical

           Lateral Boarder of the Acrominion

           Scapular spine

Insertion: Deltoid tuberosity of Humerus

Action: Abducts Arm

Supraspinatus

Origin: Supraspinous Fossa of Scapula

Insertion: Greater Tubrical of Humerous

Action: Abduction of Arm

Origin: Infraspinous Fossa of Scapula

Insertion: Greater Tubrical of Humerous

Action: External/Lateral Rotation of the Humerus

Origin: Middle half of lateral margin of the Scapula

Insertion: Greater Tubercle of Humerus

Action: External/Lateral rotation of Humerus

Origin: Subscapular Fossa

Insertion: Lesser Tubercal of Humerus

Action: Medial rotation of the Humerus

Origin: Long head- Supraglenoid tubercle of Scapula

           Short head- Coracoid process of Scapula

Insertion: Radial Tuberosity

               Bicipital Aponeurosis

Action: Flexes the forearm at the elbow

           (When supinated, supinates forearm, flexes

           shoulder)

Origin: Long Head- infraglenoid tubercle of Scapula

           Lateral Head- Humerus posterior proximal half of shaft

           Medial Head- Posterior shaft of Humerus

Insertion: Posterior surface of the olecranon process of ulna

Action: Long head abducts the arm or extends shoulder joint

           All three heads extend elbow joint

Origin: Upper 3/4 ulna

Insertion: Distal phalanx of medial 4 digits

Action: Flexes the distal and proximal ip joints, flexes wrist

Origin: Lateral epicondyle

Insertion: Middle phalanx and distal phalanx of 4 fingers

Action: extends 4 medial digits

           extends the wrist

Rectus abdominus

Origin: Pubic symphysis

Insertion: Cartiliges of ribs 5,6,7

               Xiphiod process

Action: Flexes Trunk

           Compresses abdomen

Origin: Ribs 5-12

Insertion: lliac crest

               linea alba

Action: Bilaterally- flexes trunk

           Unilaterally- Laterally flexes and rotates the spine

Origin: lliac crest

           inguinal ligament

           thoracolumbar fossa

Insertion: Cartilage of ribs 7-10

               Linea alba

Action: Bilaterally- flexes trunk

         Unilaterally- Laterally flexes and rotates the spine

Origin: Outer rim of ilium

           Dorsal surface of sacrum and coccyx

           Sarcotuberous ligament

Insertion: IT band (primary)

               Gluteal tuberosity of femur

Action: Powerful extensor of hip

           Laterally rotates thigh

Gluteus Medius

Gluteus Minimus

Origin: Outer aspect of ilium

Insertion: Greater trochanter

Action: abduct and medially rotate the thigh

1)Rectus Femoris

   Origin: Anterior inferior iliac spine (cross hip joint)

2)Vastus Lateralis

   Origin: Linea aspera of femur

3)Vastus Medialis

   Origin: linea aspera of femur

4)Vastus Intermedius

   Origin: Anterior lateral aspect of femoral shaft

Insertion: Form common tendon inserting into the patella then to the tiberal tuberosity via the patellar ligament

Action: Rectus portion flexes hip

           All four together extend the knee

Origin: ischial tuberosity

Insertion: medial aspect of tibial shaft

Action: extends hip

           flexes knee

Origin: ischial tuberosity

Insertion: medial aspect of medial tibial condyle

Action:extends hip

          flexes knee

Origin: Long head- ischial tuberosity

           Lateral head- lateral lip of linea aspera

Insertion: head of fibula

Action: extends hip

           flexes knee

Origin: Medial head- near medial condyle of femur

           Lateral head- near lateral condyle of femur

Insertion: Calcaneus via calcaneal tendon

Action: Plantarflex the ankle

           Knee flexion