8ROOTS OF BRACHIAL PLEXUS Roots are the ventral division of spinal nervesC5, C6, C7, C8, T1.PLEASE NOTE THAT ROOT OF THE SPINA NERVE IS NOT THE SAME AS THE ROOT OF SPINAL NERVE
9TYPICAL SPINAL NERVE. Spinal nerve has ROOTS (ant & Post) RAMI (ventral and dorsal)
10BRACHIAL PLEXUS PARTS AND FORMATION There are three trunks of the brachial plexusSuperior (formed by the union of C5 and C6Middle is the continuation of C7Inferior is formed by the union of C8 and T1
11DIVISIONSEach of the trunk divides into ventral and dorsal parts and forms the three following cordsMEDIALLATERALPOSTERIOR
12FORMATION OF THE CORDSMedial cord Is formed the by the continuation of the anterior division of lower trunkLateral cord is formed by the two division of upper and middle trunkposterior cord is formed by all the posterior division of three trunks.
13BRANCHES OF THE BRACHIAL PLEXUS FROM ROOTS. Two branches are derived from the roots of the brachial plexusDorsal scapular nerveLong thoracic nerve
14BRANCHES FROM THE TRUNKS Only upper trunk gives the two branchesSupra scapularsubscapular
15BRANCHES FROM THE MEDIAL CORD There five branches derived from Medial cordMedial pectoral nerveMedial cutaneous nerve of armMedial cutaneous nerve of fore armMedial root of median nerveUlnar nerve.
16BRANCHES FROM THE LATERAL CORD Lateral pectoral nerveLateral root of the median nerveMusculocutaneous nerve
17BRANCHES FROM THE POSTERIOR CORD Upper suscapularLower subscapularThoracodorsalRadialAxilary