brachial plexus. objectives. defination of plexus how it is formed different parts of brachial...

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BRACHIAL PLEXUS Slide 2 OBJECTIVES. DEFINATION OF PLEXUS HOW IT IS FORMED DIFFERENT PARTS OF BRACHIAL PLEXUS. BRANCHES FROM BRACHIAL PLEXUS Slide 3 Slide 4 BRACHIAL PLEXUS Plexus means the network of ventral divisions of Spinal nerve( C5, C6,C7,C8 and T1) Slide 5 Slide 6 PARTS OF THE BRACHIAL PLEXUS Root Root Trunk Trunk Divisions Divisions Cords Cords Slide 7 Slide 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 Slide 9 TYPICAL SPINAL NERVE. Spinal nerve has ROOTS (ant & Post) RAMI (ventral and dorsal) Slide 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 Slide 11 DIVISIONS Each of the trunk divides into ventral and dorsal parts and forms the three following cords MEDIAL LATERAL POSTERIOR Slide 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. Slide 13 BRANCHES OF THE BRACHIAL PLEXUS FROM ROOTS. Two branches are derived from the roots of the brachial plexus 1.Dorsal scapular nerve 2.Long thoracic nerve Slide 14 BRANCHES FROM THE TRUNKS Only upper trunk gives the two branches 1.Supra scapular 2.subscapular Slide 15 BRANCHES FROM THE MEDIAL CORD There five branches derived from Medial cord 1.Medial pectoral nerve 2.Medial cutaneous nerve of arm 3.Medial cutaneous nerve of fore arm 4.Medial root of median nerve 5.Ulnar nerve. Slide 16 BRANCHES FROM THE LATERAL CORD 1.Lateral pectoral nerve 2.Lateral root of the median nerve 3.Musculocutaneous nerve Slide 17 BRANCHES FROM THE POSTERIOR CORD 1.Upper suscapular 2.Lower subscapular 3.Thoracodorsal 4.Radial 5.Axilary Slide 18 Slide 19