Muscular system

1. Muscles of
Chest
Muscles of posteri
or compartment of
forearm(D)

2. •Supinator
• One head from letral epichondy
le and other head from posterio
r surface of ulna
• Posterior surface of radius
• Supination of forearm
• Radial nerve

3. •Abductor pollicis longus
• Interosseus membrane and poste
rior surfaces of radius and ulna
• Letral side of metacarpal 1st
• Abduct the thumb
• Radial nerve

4. •Extensor pollicis longus and
breves
• EPL from interosseus membrane and posteri
or surface of ulna and EPB from interosseus
membrane and posterior surface of radius
• EPL on distal phalanx and EPB on proximal
phalanx of thumb
• Extend the CP MCP and IP joints of thumb
Radial nerve

5. •Extensor indicis propiru
s
• Posterior surface of ulna and In
terosseus membrane
• Extensor hood of index finger
• Extend the index finger
• Radial nerve