1. UPPER LIMB Parts of the upper limb : 1- shoulder. 2- arm. 3- forearm.
4- hand.

2. Muscles of the forearm 1- flexor muscles : superficial group.
deep group.
2- extensor muscles :

3. Superficial flexor muscles of the forearm
Superficial group :
Pronator teres.
Flexor carpi radialis.
Palmaris longus.
Flexor carpi ulnaris.
Flexor digitorum superficialis.

4. Superficial flexor muscles of the forearm
Origin : from medial epicondyle of humerus.
Nerve supply : median nerve except flexor carpi ulnaris (by ulnar nerve).
Action : flexion of elbow joint + other actions.
Carpi, palmaris = flexion of wrist joint.
Digitorum = medial 4 fingers.

5. Superficial flexor muscles of the forearm
Pronator teres :
- Origin : common flexor origin.
- Insertion : radius.
- Nerve supply: median nerve
- Action : flexion of elbow joint, pronation.

6. Superficial flexor muscles of the forearm
Flexor carpi radialis :
- Origin : common flexor origin.
- Insertion : metacarpal bones 2,3.
- Nerve supply: median nerve
- Action : flexion of elbow joint and wrist joint.

7. Superficial flexor muscles of the forearm
Palmaris longus :
- Origin : common flexor origin.
- Insertion : palmar aponeurosis.
- Nerve supply: median nerve
- Action : flexion of elbow joint and wrist joint.

8. Superficial flexor muscles of the forearm
Flexor carpi ulnaris :
- Origin : common flexor origin.
- Insertion : metacarpal bone 5.
- Nerve supply: ulnar nerve
- Action : flexion of elbow joint wrist joint.

9. Superficial flexor muscles of the forearm
Flexor digitorum superficialis :
- Origin : common flexor origin.
- Insertion : medial 4 fingers.
- Nerve supply: median nerve
- Action : flexion of elbow joint, wrist joint and medial 4 fingers.

12. Flexor muscles of the forearm
Deep group :
Flexor pollicis longus.
Flexor digitorum profundus.
Pronator quadratus.

13. Deep flexor muscles of the forearm
Origin : from radius and ulna.
Nerve supply : median nerve and ulnar nerve (medial part of flexor digitorum profundus).
Action : flexion of wrist.

15. Deep flexor muscles of the forearm
Flexor pollicis longus :
- Insertion : thumb.
- Nerve supply: median nerve
- Action : flexion of wrist joint and thumb.

16. Deep flexor muscles of the forearm
Flexor digitorum profundus :
- Insertion : medial 4 fingers.
- Nerve supply: median nerve + ulnar nerve.
- Action : flexion of wrist joint and joints of medial 4 fingers.

17. Deep flexor muscles of the forearm
Pronator quadratus :
- Insertion : radius.
- Nerve supply: median nerve
- Action : pronation.