AP1 Practical 2 Muscles
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95 Terms
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