A-14
Indicates variable contribution
Coraco-
brachialis
Musculocutaneous
nerve
Cutaneous innervation
Muscular innervation
Median nerve
Ulnar nerve
C5
C6
C7
C6
C5
C7
C8
T1
C8
T1
Biceps
brachii
Brachialis
Flexor pollicis
longus
Pronator
quadratus
Flexor digitorum
profundus
Adductor
pollicis
7 Interossei
3 Hypothenar
muscles
Flexor
carpi
ulnaris
Flexor digitorum
superficialis
Palmaris longus
Flexor carpi radialis
Pronator teres
3 Thenar muscles
Lumbricals to digits 2,3
Lumbricals to digits 4,5
Posterior view
Median nerve
Ulnar nerve
Medial cutaneous
nerves off
medial cord
Musculocutaneous
nerve
Anterior view
Figure G.1
Each upper limb is innervated by five major nerves
arising from the brachial plexus.
The nerves from the
anterior division of the brachial plexus
innervate
the muscles in the anterior compartments: the flexor muscles of the arm,
forearm, and hand. These nerves continue distally to supply cutaneous
innervation to the forearm and hand.
Appendix G
Innervation of the Upper Limb
A-14
previous page 1156 Human Anatomy and Physiology (9th ed ) 2012 read online next page 1158 Human Anatomy and Physiology (9th ed ) 2012 read online Home Toggle text on/off