A note on the brachial plexus., Exams of Anatomy

This is a short note which gives a consistency knowledge on the brachial plexus. It is a good guide for proper understanding of the subject of the brachial plexus.

Typology: Exams

2021/2022

Available from 01/14/2022

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BRACHIAL PLEXUS
Introduction
The brachial plexus is a network of braces formed by the anterior rami of the lower four cervical and the
first thoracic spinal nerves (i.e., C5, C6, C7, c8, T1)
Components
I. Roots = C5, C6, C7, C8, T1
II. Trunks = Superior trunk
Middle trunk
Inferior trunk
III. Divisions= Anterior division
Posterior division
IV. Cords = Lateral cord
Posterior trunk
Medial cord
BRANCHES
From roots:◾️
▪Long thoracic nerve
▪Dorsal scapular nerve
From trunks: ◾️
▪Suprascapular nerve
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BRACHIAL PLEXUS

✒ Introduction

The brachial plexus is a network of braces formed by the anterior rami of the lower four cervical and the first thoracic spinal nerves (i.e., C5, C6, C7, c8, T1)

✒ Components

I. Roots = C5, C6, C7, C8, T II. Trunks = Superior trunk Middle trunk Inferior trunk III. Divisions= Anterior division Posterior division IV. Cords = Lateral cord Posterior trunk Medial cord

✒ BRANCHES

◾️ From roots: ▪Long thoracic nerve ▪Dorsal scapular nerve ◾️ From trunks: ▪Suprascapular nerve

▪Nerve to subclavius ◾️ From cords: ▪Lateral cord: Lateral pectoral nerve Lateral root of median nerve Musculocutanous nerve ▪Medial cord: Medial pectoral nerve Medial cutaneous nerve of arm Medial cutaneous nerve of forearm Medial root of median nerve Ulnar nerve ▪ Posterior cord: Radial nerve Axillary nerve Thoracodorsal nerce Upper Subscapular nerve Lower Subscapular nerve ✒ Clinical correlates

  1. Erb's paralysis . .