Forearm Muscles Flashcards
Brachioradialis (drinking muscle)
o: lat supracondylar ridge
i: lat distal radial styloid process
a: flex elbow joint (in neutral)
N: radial N
Pronater Teres (always working with pronator quadratus)
o: medial epicondyle of humerus
I: mid-lateral surface of radius
A: pronates forearm @ sup radioulnar joint
N: median N
Flexor Carpi Radialis
o: medial epicondyle
i: 2nd & 3rd metacarpals
a: flex & assist w radial deviation @ radoiocarpal joint
N: medial N
Palmaris Longus
o: medial epicondyle
i: flexor retinaculum & palmar aponeurosis
a: weak wrist (RC joint) flexor
N: median N
Flexor Carpi Ulnaris
o: medial epicondyle & olecranon
i: pisiform, hamate & 5th metacarpal
a: flexes & assist w/ ulnar deviation @ radiocarpal joint
N: ulnar N
Flexor Digitorium Superficialis
o: medial epicondyle, radius & coronoid process
i: middle phalanx 2-5
a: flex MCP & PIP of digits 2-5;
flex radoiocarpal joint
N: median N
Flexor Digitorum Profundus
o: anterior medial ulna
i: distal phalanges 2-5
a: flex MCP, PIP, DIP of 2-5 digits
flex radiocarpal joint
N: median N (lat 1/2 of FDP)
ulnar N (medial 1/2 of FDP)
Flexor Pollicis Longus
o: ant radius & interosseous membrane
i: base of distal phalanx of thumb
a: flex IP, MCP, CMC joints of thumb; wrist flex
N: median N
Pronator Quadratus
o: distal ulnar shaft
i: distal radial shaft
a: pronates forearm @ inf radioulnar joint
N: median N
Extensor Carpi Radialis Longus
o: lat supracondylar ridge
i: base of 2nd metacarpal
a: extend & assist in radial deviation @ radoiocarpal
N: radial N
Extensor Carpi Radialis Brevis
o: lateral epicondyle
i: base of 3rd metacarpal
a: ext & assist w/ radial deviation @ radiocarpal
N: radial N
Extensor Digitorium
o: lat epicondyle
i: extensor expensain phalanges 2-5
a: ext MCP, PIP & DIP of digits 2-5; ext radoiocarpal
N: radial N
Extensor Digiti Minimi
o: lateral epicondyle
i: 5th phalanx extensor expansion
a: ext 5th MCP & ext radiocarpal (weak)
N: radial N
Extensor Carpi Ulnaris
o: lat epicondyle & post ulna
i: base 5th metacarpal
a: ext & assist with ulnar deviation @ radoiocarpal
N: radial N
Supinator
o: lateral epicondyle
i: lateral surface of proximal 1/3 radius
a: supinates forearm
N: radial N
