WHAT IS BRACHIAL PLEXUS!!!!!
PLexus -means collection of nerves.
IT is the nerve plexus formed by ventral rami of( C5-C8,T1 ) nerve root.
THE plexus consists of ROOTS,TRUNKS,DIVISION,CORD and TERMINAL BRANCHES.
![](https://images.hive.blog/768x0/https://steemitimages.com/DQmPu8ZMkfmobjPWtUHNh5K6yGCkPF3kTd8LVQn9xqms1sz/image.png)
Formed by anterior primary rami of spinal nerves C5-C8,T1.
BRANCHES -
a)Nerve to serratius anterior(LONG THORACIC NERVE or NERVE OF BELL)-C5 C6 C7
IF INJURY TO THIS NERVE -'Winging of Scapula occur'
b)Nerve to rhomboideus(DORSAL SCAPULAR NERVE)
![](https://images.hive.blog/768x0/https://steemitimages.com/DQmTGRFK6dhc4agFRRxemHUCwpFh9GY2LsxJGKa66Qdj5mH/image.png)
TRUNKS-
It is divided into 3 i.e
a)SUPERIOR TRUNK -Formed by C5&C6
b)MIDDLE TRUNK-Formed by C7
c)INFERIOR TRUNK-Formed by C8&T1
BRANCHES-
a)SUPRASCAPULAR NERVE C5 & C6
b)NERVE TO SUBCLAVIUS C5 & C6
INJURY INVOLVE IN ERB'S PARALYSIS.
![](https://images.hive.blog/768x0/https://steemitimages.com/DQmYT3gUWc25wNHnyZd7i57LT8ziTqCkRjWegkQ9nATa43e/image.png)
DIVISIONS-
Each Trunk divides into ANTERIOR & POSTERIOR divisons.
CORD-
LATERAL CORD-Formed by union of Aterior divisions of Superior & Middle trunk.
MEDIAL CORD-Formed by Anterior division of Lower trunk
POSTERIOR CORD-Formed by Posterior division of all 3 trunks.
![](https://images.hive.blog/768x0/https://steemitimages.com/DQmdosgL8qwGbwx5Eju4P498C72fz1GotfDcyWwG1oHWfga/image.png)
Source-pinterest
BRANCHES-
![](https://images.hive.blog/768x0/https://steemitimages.com/DQmTeHzSrdYAfCELBjrHsxjuS5KV8ppPvxYr6wAEuKSoEiV/image.png)
MEDIAN NERVE -IT has all Nerve roots of brachial plexus .
It is formed by Lateral root of Median nerve & Medial root of Median nerve .
![](https://images.hive.blog/768x0/https://steemitimages.com/DQmQXV5TSXmi6XeDb6t6tVXWKJUU7puMMz2HXmDhj4hG8US/image.png)
REFRENCE-
GRAYS ANATOMY Book ,B.d Chaurasia textbook of mbbs .
wikipedia
PICTURES-from pinterest.com
![](https://images.hive.blog/768x0/https://steemitimages.com/DQmNUWJCwAurVTCdneGfKtJPtgrXmWRHKDzLSfo2JzWaSUH/image.png)
In PART II -we will be descussing on CLINICAL CONDITION that occurs due to Brachial plexus nerve injury.
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