ANATOMY OF BRACHIAL PLEXUS – WITH EASY MNEMONIC 

=> Brachial Plexus consist Root, Trunk, Division, Cords & Branches

=> Brachial Plexus form by nerve root from C5 to T1

• Root of Brachial Plexus
• It Made by primary rami of spinal nerve C5, C6, C7, C8, T1

• Trunk of Brachial Plexus

• Upper Trunk Made by Root of C5 & C6 
• Middle Trunk Form by C7 Root 
• Lower Trunk Made by C8 & T1 Root

• Cord of Brachial Plexus
• Lateral cord form by ventral division of Uoper and middle Trunk

• Medial cord form by ventral division of Lower Trunk

• Posterior Cord form by Dorsal division of all three trunk

• Branches of brachial plexus

• 1. Branches of the roots

• a. Nerve to serratus anterior (long thoracic nerve) (Cs, C6, C7).
• b. Nerve to rhomboideus (dorsal scapular nerve) (Cs). 

• 2. Branches of the trunks

• These arise only from the upper trunk which gives two branches. 

• a. Suprascapular nerve (C5, C6)
• b. Nerve to subclavius (C5, C6) 

• 3. Branches of the cords

• a. Branches of lateral cord
• i. Lateral pectoral (C5 -C7)
• ii. Musculocutaneous (C5-C7) 
• iii. Lateral root of median (C5-C7)

• Branches of medial cord 

• i. Medial pectoral (Cs, T1)
• ii. Medial cutaneous nerve of arm (Cg’ T₁,) forearm (Cg’
• iii. Medial cutaneous nerve of 
• iv. Ulnar (C7, C8, T₁). C7
• v. Medial root of median (Cg, T₁)

• Branches of posterior cord

• i. Upper subscapular (C5, C6) 
• ii. Nerve to latissimus dorsi (thoracodorsal) (C6, C7, Cg)
• iii. Lower subscapular (C5, C6)
• iv. Axillary (circumflex) (C5, C6) 
• v. Radial (C5-C, T1)

Diagram Of Brachial Plexus :-

Brachial plexus

Brachial Plexus

Mnemonic for Brachial Plexus :-

=> Brachial plexus Mnemonic 

Mnemonic ” Risk To Dies Come Never “

• Roots (ventral rami) C5 to T1
• Trunks (upper, middle, lower)
• Divisions (3 anterior and 3 posterior)
• Cords (lateral, posterior, medial)
• Nerve (Branches)

=> Brachial plexus Main branches 

Mnemonic “My Aunt Ragged My Uncle” :-

( From lateral to medial )

. Musculocutaneous

. Axillary

. Radial

. Median

. Ulnar

=> Branches of Medical Cord of Brachial Plexus Mnemonic

Mnemonic : M4U

• Medial Pectoral nerve
• Medial root of Median N.
• Medial Cutaneous N. of Arm
• Medial Cutaneous N. of Forearm
• Ulnar Nerve

=> Branch of Posterior Cord of Brachial Plexus Mnemonic

Mnemonic : ULTRA 

• Upper subscapular nerve 
• Lower subscapular nerve
• Thoracic nerve
• Radial nerve
• Axillary nerve

=> Branches of lateral cord of Brachial Plexus Mnemonic

Mnemonic : “LML” Love Me Lussy

• Lateral pectoral nerve
• Musculocutaneous nerve
• Lateral root of median nerve
• Branches of posterior cord