Origin/Insertion Flashcards
PEC MAJOR
O: clavicle, sternal, costal heads
I: lat lip of inter tubercle groove
N: lat/med pectoral nerve
F: adduct, IR, Flex, Ext
PEC MINOR
O: ribs 3, 4, 5
I: coracoid
N: med pectoral
F: scap fixed - elevate ribs, scap protraction
scap not fixed - stretch arm forward
Subclavius
O: 1st rib
I: clavicle
N: n. to subclavius
F: anchor/depress clavicle
SERRATUS ANTERIOR
O: ext surface of ribs 1-8
I: ant surface/med border of scap
N: long thoracic
F: rotate inf angle of scap
hold scap against thoracic wall
protract scap
TRAPS
O: sup nuchal line, C7 - T12
I: acomion, spine of scap
N: accessory
F: sup - elevate scap
mid - retract scap
inf - depress scap/lower shldr
combined - rotate scap
LATS
O: T7, thoracolumbar fascia, iliac crest
I: acromion, spine of scap
N: thoracodorsal
F: ext/ADD/IR
LEVATOR SCAP
O: C1-4
I: med border of scap
N: dorsal scapular
F: elevate scap
RHOMBOIDS
O: C7-T5
I: med border of scap
N: dorsal scapular
F: retract scap
DELTOID
O: acromion, spine of scap, clavicle
I: deltoid tuberosity
N: axillary
F: stabilize shldr
abd shldr > 15
ant - flex shldr
post - ext shldr
TERES MAJOR
O: inf angle of scap
I: med lip of inter tubercle groove
N: lower subscapular
F: stabilize humeral head
ADD shldr
IR
SUPRASPINATUS
O: supraspinous fossa
I: greater tubercle
N: suprascapular
F: abd shldr 1st 15
INFRASPINATUS
O: infraspinous fossa
I: greater tubercle
N: suprascapular
F: ADD/ER
TERES MINOR
O: lat border of scap
I: greater tubercle
N: axillary
F: ADD/ER
SUBSCAPULARIS
O: subscapular fossa
I: lesser tubercle
N: upper/lower sub scapular
F: ADD/IR
BICEPS
O: long head - supraglenoid tubercle
short head - coracoid process
I: radial tuberosity/bicepital aponeurosis
N: musculocutaneous
F: flex arm/f arm
supinate f arm when elbow flexed
BRACHIALIS
O: distal 1/2 of humerus
I: coronoid process/ulnar tuberosity
N: musculocutaneous
F: flex elbow
CORACOBRACHIALIS
O: coracoid process
I: mid 1/3 of humerus
N: musculocutaneous
F: flex/add arm
stabilize GH joint
TRICEPS
O: infraglenoid tubercle
I: olecranon
N: radial
F: extend elbow
ext/add arm/shldr