HUMB1002 Lecture Notes - Lecture 8: Median Nerve, Flexor Digitorum Superficialis Muscle, Flexor Digitorum Profundus Muscle
23 Jun 2018
School
Department
Course
Professor
Scaphoid
→
Lunate
→
Triquetrum
→
Pisiform
→
Trapezium
→
Trapezoid
→
Capitate
→
Hamate
→
Carpal Bones
Wednesday, 16 May 2018
2:04 PM
E Page 1
Name
Proximal
Attachment Point
Distal
Attachment
Point
Action, Function
Nerve Supply
Image
Brachioradi
alis
proximal 2/3 of
supracondylar
ridge of humerus
lateral distal
surface of radius
weak elbow flexor
(“drinker’s muscle")
Radial nerve
Extensor
Carpi
Radialis
Longus
lateral
supracondylar ridge
of humerus
dorsal aspect of
base of 2nd
metacarpal
wrist extension and
radial deviation
(abduction)
radial nerve
Extensor
Carpi
Radialis
Brevis
lateral epicondyle of
the humerus
dorsal aspect of
base of 3rd
metacarpal
wrist extension and
radial deviation
(deep branch) of
radial nerve
Extensor
Digitorum
lateral epicondyle of
humerus
extensor
expansions of
digits 2‐4
wrist,
metacarpophalange
al
& interphalangeal
joints extension
(deep branch) of
radial nerve
Extensor
Digiti
lateral epicondyle of
humerus
extensor
expansion of 5th
metacarpophalagea
l &
(deep branch) of
radial nerve
Muscles of the Wrist & Hand
Friday, 4 May 2018
6:32 PM
E Page 2
Digiti
Minimi
humerus
expansion of 5th
digit
l &
interphalangeal
joints extension
radial nerve
Extensor
Carpi
Ulnaris
lateral epicondyle of
humerus &
posterior border of
ulna
dorsal aspect of
base of 5th
metacarpal
wrist extension and
ulnar
deviation
(adduction)
(deep branch) of
radial nerve
Supinator
lateral epicondyle of
humerus,
radial collateral and
anular
ligaments, crest of
ulna
lateral surface of
proximal 1/3 of
radius
supination of
forearm
(deep branch) of
radial nerve
Abductor
Pollicis
Longus
posterior surface of
proximal ½ of
ulna, radius, and
IOM
base of 1st
metacarpal
carpometacarpal
joint
abduction and
extension of 1st
digit
posterior
interosseous nerve
(radial n.)
`
Extensor
Pollicis
Brevis
posterior surface of
distal 1/3 of
radius and IOM
dorsal aspect of
base of proximal
phalanx of 1st
digit
1st digit (thumb)
extension
posterior
interosseous nerve
(radial n.)
Extensor
Pollicis
Longus
posterior surface of
middle 1/3 of
ulna and IOM
dorsal aspect of
base of distal
phalanx of 1st
digit
extension of 1st
digit
posterior
interosseous nerve
(radial n.)
Extensor
Indicis
posterior surface of
distal 1/3 of
ulna and IOM
extensor
expansion of
2nd digit
extension of 2nd
digit
posterior
interosseous nerve
(radial n.)
E Page 3
