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13 Cards in this Set

  • Front
  • Back
orbicularis oculi

-origin
-insertion
-action
origin: frontal bone, maxilla

insertion: skin of eyelid

action: closes eyelid
orbicularis oris

-origin
-insertion
-action
origin: mandible, maxilla, fascia of facial muscles

insertion: skin of lips

action: closes lips
zygomaticus major and minor

-origin
-insertion
-action
origin: zygomatic bone

insertion: muscle and skin at angle of mouth

action: elevates and abducts upper lip
massester

-origin
-insertion
-action
origin: zygomatic arch

insertion: lateral rams of mandible

action: elevates and protracts mandible
sternocleidomastoid

-origin
-insertion
-action
origin: manubrium and medial clavicle

insertion: mastoid process, superior nuchal line

action: one: rotates and extend neck, both: flex neck
pectoralis major

-origin
-insertion
-action
origin: clavicle, sternum, cartilages of ribs 1-7

insertion: crest of greater tubercle of humerus

action: flexes, adducts, and medially rotates arm
origin vs insertion
origin is moving, insertion moves. Example for biceps brachii
pectoralis minor

-origin
-insertion
-action
origin: Ribs 3-5

insertion: coracoid process of scapula

action: depresses glenoid cavity, raises ribs 3-5
external oblique

-origin
-insertion
-action
origin: ribs 5-12

insertion: inguinal ligament, iliac crest, rectus abdominus

action: compresses abdominal wall, laterally rotates trunk
internal oblique

-origin
-insertion
-action
origin: inguinal ligament, iliac crest, lumbar fascia

insertion: linea alba, ribs 10-12, rectus sheath

action:compresses abdominal wall, lateral rotates trunk
rectus abdominus

-origin
-insertion
-action
origin: pubic crest, symphysis pubis

insertion: inferior ribs, xiphoid process

action: flexes vertebral column, compresses abdominal wall
biceps brachii


-origin
-insertion
-action
origin: supraglenoid tubercle, coracoid process of scapula

insertion: radial tuberosity

action: flexes arm, flexes forearm, supinates hand
triceps brachii

-origin
-insertion
-action
origin: infraglenoid tuberosity of scapula, lateral and posterior surface of humerus

insertion: olecranon process of ulna

action: extends and adducts arm, extends forearms