1. BRACHIAL PLEXUS

2. OBJECTIVES. DEFINATION OF PLEXUS HOW IT IS FORMED
DIFFERENT PARTS OF BRACHIAL PLEXUS.
BRANCHES FROM BRACHIAL PLEXUS

4. BRACHIAL PLEXUS Plexus means the network of ventral divisions
of Spinal nerve( C5, C6 ,C7,C8 and T1)

6. PARTS OF THE BRACHIAL PLEXUS
Root
Trunk
Divisions
Cords

8. ROOTS OF BRACHIAL PLEXUS
Roots are the ventral division of spinal nerves
C5, C6, C7, C8, T1.
PLEASE NOTE THAT ROOT OF THE SPINA NERVE IS NOT THE SAME AS THE ROOT OF SPINAL NERVE

9. TYPICAL SPINAL NERVE. Spinal nerve has ROOTS (ant & Post)
RAMI (ventral and dorsal)

10. BRACHIAL PLEXUS PARTS AND FORMATION
There are three trunks of the brachial plexus
Superior (formed by the union of C5 and C6
Middle is the continuation of C7
Inferior is formed by the union of C8 and T1

11. DIVISIONS
Each of the trunk divides into ventral and dorsal parts and forms the three following cords
MEDIAL
LATERAL
POSTERIOR

12. FORMATION OF THE CORDS
Medial cord Is formed the by the continuation of the anterior division of lower trunk
Lateral cord is formed by the two division of upper and middle trunk
posterior cord is formed by all the posterior division of three trunks.

13. BRANCHES OF THE BRACHIAL PLEXUS FROM ROOTS.
Two branches are derived from the roots of the brachial plexus
Dorsal scapular nerve
Long thoracic nerve

14. BRANCHES FROM THE TRUNKS
Only upper trunk gives the two branches
Supra scapular
subscapular

15. BRANCHES FROM THE MEDIAL CORD
There five branches derived from Medial cord
Medial pectoral nerve
Medial cutaneous nerve of arm
Medial cutaneous nerve of fore arm
Medial root of median nerve
Ulnar nerve.

16. BRANCHES FROM THE LATERAL CORD
Lateral pectoral nerve
Lateral root of the median nerve
Musculocutaneous nerve

17. BRANCHES FROM THE POSTERIOR CORD
Upper suscapular
Lower subscapular
Thoracodorsal
Radial
Axilary