CHAPTER 10 Muscular System: Gross Anatomy
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Olecranon processof ulna
Flexorcarpi ulnaris
Extensorcarpi ulnaris
Extensor digitorum(cut and reflected)
Supinator
(deep)
Extensor carpiradialis longus
Extensordigitorum
Extensor carpiradialis brevis
Abductor pollicislongus
Ulna
Extensorretinaculum
Extensor pollicislongus
Extensor pollicisbrevis
(a)
Posterior view
Extensordigitorum
Extensor carpiulnaris
Extensordigitorumtendons
Extensordigiti minimitendon
Extensorcarpi radialis
Anatomicalsnuffbox
Tendons ofextensordigitorum
(c)
Posterior view
FIGURE 10.26
Posterior Right Forearm Muscles
(
a
) Right forearm (superficial). (
b
) Deep muscles of the right posterior forearm. The extensor digitorum, extensor digiti minimi, and extensor carpi ulnaris mus-cles are cut to reveal deeper muscles. (
c
) Photograph showing dissection of the posterior right forearm and hand. (
d
) Surface anatomy of posterior forearm.(Muscle names are in bold.)