The document describes the muscles of the anterior forearm compartment, dividing them into superficial, intermediate, and deep groups. The superficial muscles are the flexor carpi ulnaris, palmaris longus, and flexor carpi radialis, which originate from the medial epicondyle and function to flex and adduct the wrist. The intermediate muscle is the flexor digitorum superficialis, which originates from the medial epicondyle and radius and flexes the fingers. The deep muscles are the flexor digitorum profundus and flexor pollicis longus, which originate from the ulna and radius and flex the fingers and thumb.

1. Muscles of
Chest
Muscles of Anterio
r compartment of f
orearm

2. •Superficial
•Intermediate
•Deep

3. •Superficial
•Flexor carpi ulnaris
•Palmaris long us
•Flexor carpi radialis
•Pronator Teres

4. • All superficial muscles arise from me
dial epicondyle by common tendon

5. •Flexor carpi ulnaris
• Common tendon and long head
from ulna
• Pisiform bone
• Flexetion and adduction at wris
t
• Ulnar nerve

6. •Palmaris longus
•Flexor retinaculam of wrist
•Flexetion at wrist
•Median nerve
•About 15% of population
lack this muscle

7. •Flexor carpi radialis
•Base of metacarpal 2nd and 3r
d
•Flexetion and adduction
•Median nerve

8. •Pronator Teres
• One head from common tendon and
other head from olecranon process
of ulna
• Mid shaft of ulna
• Pronation of forearm
• Median nerve

9. •Intermediate
• Flexor digitorum superficalis
• One head from medial epicondyle and oth
er head radius
• Split into four tendon for middle phalanx
of four fingers
• Flexetion at metacarpophalangeal and mid
le interphalangeal and wrist joint
• Median nerve

11. •Deep

12. • Flexor digitorum profundus
• Ulna and Interosseus membrane
• Splits into four tendons for distal pha
langes of four fingers
• Flexetion of distal interphalangeal joi
nt of four fingers and also at metacarp
ophalangeal and wrist joint
• Medial half by Ulnar and letral half b
y Median nerve

13. •Flexor policis longus
• Radius and Interosseus membrane
• Distal phalanx of thumb
• Flexetion at distal interphalangeal
and metacarpophalangeal joint of t
humb
• Median nerve

14. •Pronator quadratus
• Anterior surface of ulna
• Anterior surface of radius
• Pronation of forearm
• Median nerve