Brachial Plexus — Roots, Trunks, Divisions, Cords, Branches

NEETNEET-PGAIIMS

Items to Memorize

  1. Roots (C5, C6, C7, C8, T1)
  2. Trunks (Upper, Middle, Lower)
  3. Divisions (Anterior & Posterior)
  4. Cords (Lateral, Posterior, Medial)
  5. Branches (Musculocutaneous, Axillary, Radial, Median, Ulnar)

Mnemonic Tricks

Sentence Trick

Robert Taylor Drinks Cold Beer

How It Maps

Cue Maps To
Robert Roots
Taylor Trunks
Drinks Divisions
Cold Cords
Beer Branches

Why It Sticks

Five words, five parts, in the exact proximal-to-distal order. Picture the actor Robert Taylor drinking a cold beer — celebrities in absurd situations stick.

Sentence Trick

My Aunt Really Makes Ugly faces (terminal branches)

How It Maps

Cue Maps To
My Musculocutaneous
Aunt Axillary
Really Radial
Makes Median
Ugly Ulnar

Why It Sticks

The branches in lateral-to-medial order. Picturing your aunt making ugly faces is specific and funny enough to recall instantly.

Story Method

Imagine a TREE: the ROOTS (C5-T1) anchor it underground. Three TRUNKS grow upward (Upper, Middle, Lower). Each trunk splits into two DIVISIONS (anterior and posterior — front and back). The divisions regroup into three CORDS (named by position around the axillary artery). Finally, five BRANCHES spread out to the arm like leaves.

Why It Sticks

The tree analogy mirrors the actual anatomy perfectly — it starts narrow (roots), expands (trunks/divisions), regroups (cords), then spreads (branches).

Frequently Asked Questions

What are the 5 parts of the brachial plexus in order?

Roots → Trunks → Divisions → Cords → Branches. Remember: 'Robert Taylor Drinks Cold Beer.' The roots come from C5-T1 spinal nerves.

What are the terminal branches of the brachial plexus?

The 5 terminal branches are: Musculocutaneous, Axillary, Radial, Median, and Ulnar nerves. Mnemonic: 'My Aunt Really Makes Ugly faces.'

How are the cords of the brachial plexus named?

The cords are named by their position relative to the axillary artery: Lateral cord (lateral to artery), Posterior cord (behind artery), and Medial cord (medial to artery).

Is brachial plexus important for NEET-PG?

Extremely important. NEET-PG frequently asks about Erb-Duchenne palsy (C5-C6 upper trunk injury), Klumpke's palsy (C8-T1 lower trunk injury), and nerve lesion clinical presentations.

What is Erb's point?

Erb's point is where the C5, C6 nerve roots merge to form the upper trunk. Injury here causes Erb-Duchenne palsy — the 'waiter's tip' position with arm adducted and internally rotated.