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Orbicularis Oculi Origin
Medial wall of orbit

Orbicularis Oculi Insertion
Circular path around orbit

Orbicularis Oculi Action
closes eyes

Mentalis Action
raises and protrudes the lower lip, wrinkles the skin on the chin

Platysma Action
Depresses the lower jaw/pouting

Temporalis Origin
Temporal bone

Temporalis Insertion
Coronoid process

Temporalis action
elevates the mandible

Masseter Insertion
Mandibular angle

Masseter action
closes mouth

Masseter Origin
Maxilla

Mylohyoid Action
elevates hyoid bone

sternohyoid Action
depresses hyoid bone

sternocleidomastoid Origin
Sternums manubrium

Sternocleidomastoid Insertion
mastoid process of temporal bone

sternocleidomastoid Action
Elevates sternum during forced inhalation

Sternothyroid action
depresses thyroid cartilage of larynx

Deltoid Origin
acromial extremity of clavicle

deltoid insertion
devoid of tuberosity of humerus

deltoid action
laterally rotates arm

pectoralis major origin
clavicle

pectoralis major insertion
deltoid

pectoralis major action
medially rotates arm

Pectoralis minor action
rotates scapula downward

transverse abdominis action
compresses abdomen

Internal oblique action
rotate vertebral column

External oblique Origin
ribs 4-12

external oblique insertion
iliac crest
external oblique action
rotate vertebral column

rectus abdominis origin
pubic crest

rectus abdominis insertion
xiphoid process

rectus abdominis action
compresses abdomen to aid in urination/defecation

Trapezius origin
spines of c7-t12

trapezius insertion
clavicle

trapezius action
stabilize scapula

latissimus dorsi origin
lumbar vertabrae

latissimus dorsi insertion
intertubercular sulcus of humerus

latissimus dorsi action
elevates torso
rhomboid major n minor action
stabilizes scapula

teres major origin
inferior angle of scapula

teres major insertion
medial lip of the bicipital groove

teres major action
extends arm at shoulder joint

levator scapulae action
elevates scapula and rotates downward

supraspinatus action
assists deltoid muscle in abducting arm

infraspinatus action
laterally rotates and adducts arm
biceps brachii Origin
supraglenoid tubercle of scapula
biceps brachii insertion
radial tuberosity
biceps brachii action
flexes forearm at elbow joint

long head of biceps brachii origin
infraglenoid tubercle of scapula

long head of biceps brachii insertion
olecranon of ulna

long head of bicep brachii action
extends forearm at elbow joint
medial head of biceps brachii origin
posterior surface of humerus
medial head of biceps brachii insertion
olecranon of ulna
medial head of biceps brachii action
extends forearm at elbow joint

brachialis origin
anterior surface of humerus

brachialis insertion
coronoid process of ulna

brachialis action
flexes forearm at elbow joint

brachioradialis origin
distal end of humerus

brachioradialis insertion
styloid process of radius

brachioradialis action
flexes forearm at elbow joint