Brachial plexus

1.Comprises of C5678T1 nerve roots.

2. Consists of Root, trunk, division ,cord.

3.Two branches are given from root ie.

• DORSAL SCAPULAR nerve supplies rhomboides major and minor
• LONG THORACIC NERVE supolies Serratius anterior

4. Trunks give of two branches that too superior trunk

• SUPRASCAPULAR N. supply supraspinatus and infraspinatus
• N TO SUBCLAVIUS

5. No nerve given from division

6.CORDS
Lateral cord

•   Lateral pectoral nerve
•   musculocutaneous
•   Lateral cord of median n.

POSTERIOR CORD

• Upper scapular 
• Lower scapular
• Nerve to latissmus dorsi 
• Axillary nerve
• Radial.nerve

MEDIAL.CORD

• Medial cord of median nerve
• Medial pectoral.nerve
• Medial cutaneous n of arm
• Medial cutaneous n of forearm
• Ulnar nerve.

7. End nerves are

1. Musculocutaneous
2. Axillary
3. Radial
4. Median
5. Ulnar