Essentials of Anatomy and Physiology

156 The Muscular System

Deltoid

Biceps

Brachialis

Extensor carpi

radialis longus

Extensor carpi

radialis longus

Brachioradialis

Flexor

carpi radialis

Extensor carpi

radialis brevis

Abductor

pollicis

brevis

Abductor

pollicis

Triceps

Palmaris longus

Flexor pollicis longus

Deltoid

Brachialis

Brachioradialis

Extensor carpi

radialis brevis

Extensor

digitorum

AB

Flexor digitorum

superficialis

Abductor

pollicis longus

Extensor

pollicis brevis

Anconeus

Flexor carpi ulnaris

Extensor carpi ulnaris

Extensor digiti minimi

Figure 7–11. Muscles of the arm. (A) Anterior view. (B) Posterior view.

QUESTION:Where are the muscles that flex the fingers located? How did you know?