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Brachial plexus

We’ll be talking about: Spinal cord and spinal nerves Brachial plexus. It can be your worst nightmares unless you follow up your lectures a day by day Doctors love to ask a bout it in the exams Medical important … you’ll know it by yourself . Brachial plexus.

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Brachial plexus

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  1. We’ll be talking about: • Spinal cord and spinal nerves • Brachial plexus It can be your worst nightmares unless you follow up your lectures a day by day Doctors love to ask a bout it in the exams Medical important … you’ll know it by yourself Brachial plexus AnoodAlassaf :’) faculty of medicine … A second year victim And why should I care?

  2. Vertebral column: 33 vertebrae 26 bone • 5 of them fuse to make the sacrum • = considered 1 bone • 4 fuse to form the coccyx • = considered 1 bone

  3. Divided into 31 segment Base of the brain At each segment From each sides there is a spinal nerve Between L1 and L2

  4. Here it’s different • 31 segments • 8 cervical • 12 thoracic • 5 lumbar • 5 sacral • 1 coccygeal In the thoracic part: Each spinal nerve arises from its corresponding segment belowthe corresponding vertebra

  5. Then each spinal nerve divides into: Anterior ramus and posterior ramus

  6. Brachial plexus • Is a network of nerve fibers (anterior rami) running from the spinal cord, formed by the lower four cervical and first thoracic (C5 T1 ) • Proceeds through the neck, axilla, into the arm • Gives off many nerves that supply the shoulder, chest, and arms

  7. trunks divisions

  8. M Terminal branches cords trunks roots divisions 3 1 c5 anterior superior 2 lateral c6 posterior 12 anterior 13 middle posterior posterior c7 5 11 posterior 10 9 4 c8 medial inferior anterior T1 8 7 6 Posterior cord: Upper subscapular nerve (9) Lower subscapular nerve (10) Middle subscapular nerve = Nerve to latissimusdorsi = thoraco dorsal (11) Axillary nerve (12) Radial nerve (13) ULMAR Medial cord: Ulnar nerve (4) Medial root of median nerve (5) Medial pectoral nerve (6) Medial cutaneous nerve of the arm(7) Medial cutaneous nerve of the forearm(8) UMMMM Lateral cord: Musculocutaneous nerve (1) Lateral root of median nerve (2) Lateral pectoral nerve (3) MLL

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