Origin/Insertion Flashcards by Meg Schwartz

PEC MAJOR

O: clavicle, sternal, costal heads

I: lat lip of inter tubercle groove

N: lat/med pectoral nerve

F: adduct, IR, Flex, Ext

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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

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Subclavius

O: 1st rib

I: clavicle

N: n. to subclavius

F: anchor/depress clavicle

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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

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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

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LATS

O: T7, thoracolumbar fascia, iliac crest

I: acromion, spine of scap

N: thoracodorsal

F: ext/ADD/IR

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LEVATOR SCAP

O: C1-4

I: med border of scap

N: dorsal scapular

F: elevate scap

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RHOMBOIDS

O: C7-T5

I: med border of scap

N: dorsal scapular

F: retract scap

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DELTOID

O: acromion, spine of scap, clavicle

I: deltoid tuberosity

N: axillary

F: stabilize shldr
abd shldr > 15
ant - flex shldr
post - ext shldr

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TERES MAJOR

O: inf angle of scap

I: med lip of inter tubercle groove

N: lower subscapular

F: stabilize humeral head
ADD shldr
IR

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SUPRASPINATUS

O: supraspinous fossa

I: greater tubercle

N: suprascapular

F: abd shldr 1st 15

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INFRASPINATUS

O: infraspinous fossa

I: greater tubercle

N: suprascapular

F: ADD/ER

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TERES MINOR

O: lat border of scap

I: greater tubercle

N: axillary

F: ADD/ER

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SUBSCAPULARIS

O: subscapular fossa

I: lesser tubercle

N: upper/lower sub scapular

F: ADD/IR

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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

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BRACHIALIS

O: distal 1/2 of humerus

I: coronoid process/ulnar tuberosity

N: musculocutaneous

F: flex elbow

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CORACOBRACHIALIS

O: coracoid process

I: mid 1/3 of humerus

N: musculocutaneous

F: flex/add arm
stabilize GH joint

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TRICEPS

O: infraglenoid tubercle

I: olecranon

N: radial

F: extend elbow
ext/add arm/shldr

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ANCONEUS

O: lat epicondyle

I: olecranon

N: radial

F: ext f arm

PRONATOR TERES

O: humeral head, lat epicondyle, ulnar head

I: lat surface of radius

N: median

F: pronate f arm

FLEXOR CARPI RADIALIS

O: humeral head, med epicondyle

I: 2nd metacarpal

N: median

F: flex/abd wrist

FLEXOR CARPI ULNARIS

O: humeral head/ medial epicondyle

I: pisiform

N: ulnar

F: flex/add hand

PALMARIS LONGUS

O: humeral head/medial epicondyle

I: flexor retinaculum/palmer aponeurosis

N: median

F: N/A

FLEXOR DIGITORUM SUPERFICIALIS (FDS)

O: humeral, ulnar, radial heads

I: body of mid phalanges (2-5)

N: median

F: flex PIP, MCP, wrist, slight elbow flex

FLEXOR DIGITORUM PROFUNDUS (FDP)

O: ulna/interosseus membrane I: base of distal phalanges (2-5) N: median (2 & 3), ulnar (4 & 5) F: flex DIP, PIP, MCP, and wrist

FLEXOR POLLICIS LONGUS

O: ant radius/interosseus membrane I: base of distal phalanx N: median F: flex IP (thumb), MCP, CMC and wrist

PRONATOR QUADRATUS

O: distal 1/4 of ant ulna I: distal 1/4 of ant radius N: median F: pronate

BRACHIORADIALIS

O: lat supraepicondylar ridge I: lat radius N: radial F: flex elbow

EXTENSOR CARPI RADIALIS LONGUS

O: lat supraepicondylar ridge I: base of 2nd MC N: radial F: ext, abd, add wrist

EXTENSOR CARPI RADIALIS BREVIS

O: lat epicondyle I: base of 3rd MC N: radial F: ext, abd, add wrist

EXTENSOR DIGITORUM

O: lat epicondyle I: extensor expansion N: radial F: ext medial 4 digits

EXTENSOR DIGITI MINIMI

O: lat epicondyle I: extensor expansion of 5th digit N: radial F: exited 5th digit

EXTENSOR CARPI ULNARIS

O: lat epicondyle I: base of 5th MC N: radial F: ext, abd, add wrist

SUPINATOR

O: lat epicondyle, radial collateral/anular lig I: lat, ant, post surface of radius N: post interosseous F: supinate

ABDUCTOR POLLICIS LONGUS

O: post surface of ulna, radius, interosseous membrane I: base of 1st MC N: post interosseous F: ext/abd 1st digit

EXTENSOR POLLICIS BREVIS

O: post radius/interosseous membrane I: base of prox phalanx N: post interosseous F: ext/abd 1st digit

EXTENSOR POLLICIS LONGUS

O: post radius/interosseous membrane I: base of distal phalanx N: post interosseous F: ext/abd 1st digit

EXTENSOR INDICES

O: ulna/interosseous membrane I: 2nd extensor expansion N: post interosseous F: ext med 2 digits

ABDUCTOR POLLICIS BREVIS

O: flexor retinaculum, scaphoid, trapezium I: base of 1st phalanx N: median F: abd thumb, CMC opposition

FLEXOR POLLICIS BREVIS

O: flexor retinaculum, scaphoid, trapezium I: base of 1st phalanx N: superficial head of median deep head of ulnar F: flex thumb CMC/MCP opp of thumb

OPPONENS POLLICIS

O: flexor retinaculum, scaphoid, trapezium I: 1st MC N: median F: opposition of thumb (flex/med rotation of 1st MC/CMC)

ABDUCTOR DIGITI MINIMI

O: pisiform I: base of prox phalanx N: ulnar F: abd digit flex 5th prox

FLEXOR DIGITI MINIMI BREVIS

O: hook of hamate/flexor retinaculum I: base of 5th prox phalanx N: ulnar F: flex 5th MCP

OPPONENS DIGITI MINIMI

O: hook of hamate/flexor retinaculum I: med border of 5th MC N: ulnar F: flex/lat rotate 5th MC

LUMBRICALS

O: FDP tendons I: lat side of extensor expansion N: 1 & 2 - median 3 & 4 - ulnar F: flex MCP, ext IP

ADDUCTOR POLLICIS

O: capitate, 2/3 MC I: med side of base of 1st prox phalanx N: ulnar F: adduct thumb

DORSAL/PALMER INTEROSSEI

O: from MCs I: extensor expansion, base of prox phalanx N: ulnar F: adduct digits - palmer (PAD) abduct digits - dorsal (DAB) helps lumbrical function