Combined Anatomy Flashcards
Bicep Brachii
O - SH = caracoid process, LH = supra glenoid fossa
I - radial tuberosity
In - Musculocutaneous nerve (C5-C7)
F - supinator, flex at elbow and shoulder
Coracobracialis
O - coracoid process
I - medial midshaft humerus
In - musculocutaneous (C5-7)
F - flexor at shoulder
brachialis
O - anterior midshaft humerus
I - ulnar tuberosity
In - musculocutenous (C5-7)
F - flexor at elbow
Supraspinatous
O - supraspinous fossa
I - superior facet posterior surface greater tubercle humerus
In - suprascpaular nerve C5/6
F - initial 15 degrees abduction shoulder
Infraspinatous
O - infraspinous fossa
I - middle facet posterior greater tubercle humerus
In - suprascapular nerve C5/6
F - lateral rotation arm at glenohumeral
Subscapularis
O - subscapular fossa
I - lesser tubercle of humerus (anteriorly)
In - upper and lower subscapular nerve (C567)
F - medial rotation of arm at GH
Teres minor
(superio-lateral to teres major)
O - adjacent to lateral border of the scapula
I - inferior facet greater tubercle humerus (posteriorly)
In - axillary nerve C5/6
F - lateral rotation at GH
Teres major
O - posterior surface inferior angle scapula (medial)
I - medial lip inter tubercular sulcus humerus (anterior)
In - lower subscapular nerve C567
F - medial rotation humerus + extension at GH
Triceps Brachii
O - LH = infrageloid fossa, medial and lateral heads from posterior surface of humerus
I - olecranon
In - radial nerve (C6,7,8)
F - extension at shoulder and elbow (small adduct at GH)
Pronator Teres
Anterior O - medial epicondyle I - lateral midshaft radius In - median nerve (C6,7) F - pronation of wrist
Pronator Quadratus
anterior O - distal ulnar, linear ridge I - distal anterior radius In - anterior interosseous nerve (branch median) F - pronation
flexor carpi ulnaris
anterior O - medial epicondyle I - base metacarpal 5 In - ulnar nerve F - flexes and adducts wrist
palmaris longus
anterior O - medial epicondyle I - palmar aponeurosis In - median nerve F - flexes wrist
Flexor carpi radialis
anterior O - medial epicondyle I - base metacarpal 2 and 3 In - median nerve F - flexes wrist
Flexor Digitorum Superficialis
anterior O - medial epicondyle I - 4 tendons, palmar suffices of middle phalanxes In - median nerve F - flex wrist and PIP / MCP
Flexor Digitorum profundus
anterior O - medial epicondyle I - distal phalanges, 4 tendons In - medial half ulnar, lateral half anterior interosseous (median) F - flex wrist, PIP and MCP
Flexor Pollicis longus
anterior O - medial epicondyle I - palmar surface distal phalanx In - anterior interosseous (median) F - flex PIP and MCP of thumb
Brachioradialis
posterior
O - lateral supracondylar ridge on humerus
I - styloid process on radius
In - radial nerve
F - flex at elbow when forearm is midpronated
Extensor carpi radialis longus
posterior O - lateral epicondyle I - dorsal surface base metacarpal 2 In - radial nerve F - extend / abduct wrist
extensor carpi radialis brevis
posterior O - lateral epicondyle I - dorsal base metacarpal 2 and 3 In - radial nerve (deep) F - extends and abducts wrist
Extensor digitorum
posterior
O - lateral epicondyle
I - four tendons into extensor hood (attach middle and distal phalanxes)
In - Radial nerve - posterior interoessus nerve
F - extends fingers and wrist
extensor digiti minimi
posterior O - lateral epicondyle I - extensor hood of little finger In - radial nerve (posterior interoseouss) F - extends little finger
extensor carpi ulnaris
posterior
O - lateral epicondyle
I - tubercle on medial side base metacarpal 5
In - radial nerve (posterior interosseous)
F - extends and adducts wrist
anconeous
posterior O - lateral epicondyle I - olecranon and proximal posterior ulnar In - radial nerve F - abduction of ulna in pronation
Supinator
posterior O - lateral epicondyle I - lateral surface of radius In - radial nerve (posterior interosseous) F - supination of the wrist
Abductor pollicis longus
posterior
O - shaft of radius
I - lateral base metacarpal 1
In - radial nerve (posterior interosseous)
F - abducts CMC of thumb (accessory extensor)
Extensor Pollicis Brevis
posterior O - shaft radius I - dorsal base proximal phalanx thumb In - radial nerve (posterior interosseous) F - extends MCP and CMC of thumb
Extensor Pollicis Longus
posterior
O - shaft radius
I - dorsal base distal phalanx thumb
In - radial nerve (posterior interosseous)
F - extends IP, MCP and CMC joint of thumb
Extensor Indicis
posterior O - shaft radius I - extensor hood index finger In - radial nerve (posterior interosseous) F - extends index finger
Dorsal Interossei
O - adjacent to metacarpals
I - extensor hood and base proximal phalanxes index middle and ring
In - deep branch ulnar
F - abduction of index middle and ring
Palmar interossei
O - sides of metacarpals
I - extensor hood thumb index ring and little and proximal phalanx of thumb
In - deep branch ulnar
F - abduction of thumb, index, ring and little
Adductor Pollicis
O - metacarpal 3 and base of 2 and 3
I - base proximal phalanx thumb and extensor hood
In - deep branch ulnar
F - adduct thumb
Lumbricals
O - tendons of FDP
I - extensor hood of 4 digits
In - medial 2 unlar, lateral 2 median
F - flex MCP but extend IP joints
Opponens Pollicis
Thenar
O - tubercle of trapezium and flexor retinaculum
I - lateral palmar margin of metacarpal 1
In - recurrent median
F - opposition / medial rotation
Abductor Pollicis Brevis
Thenar O - tubercles scaphoid and trapezium I - proximal phalanx and extensor hood thumb In - recurrent branch median F - abducts thumb at MCP
Flexor pollicis brevis
Thenar O - tubercle of trapezium I - proximal phalanx thumb In - recurrent median F - flex thumb at MCP
Opponens digit minimi
hypothenar O - hook of hamate I - medial aspect metacarpal 5 In - deep branch ulnar F - lateral rotation little finger
Abductor digiti minimi
hypothenar O - pisiform and tendon FCU I - proximal phalanx little finger In - deep ulnar F - abducts little finger MCP
Flexor digiti minimi brevis
hypothenar O - hook of hamate I - proximal phalanx little finger In - deep branch ulnar nerve F - flexes little finger at MCP