Vines idol brachial plexus ppt trans

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Vines idol brachial plexus ppt trans

  1. 1. THE BRACHIAL PLEXUS
  2. 2. • There are 31 pairs of spinal nerves that exit the spinal cord supplying innervation to the muscles and structures of the body.
  3. 3. 3 Spinal Nerves 8 pairs of cervical nerves from C1 to C8 12 pairs of thoracic nerves from T1-T12) 5 pairs of lumbar nerves from L1 to L5 5 pairs of sacral nerves from S1 to S5 1 pair of coccygeal nerves located at C zero (Co)
  4. 4. • The spinal nerves are divided into 4 major nerve plexuses. • A nerve plexus is nothing more than a system or network of connected nerve fibers that link spinal nerves with specific areas of the body.
  5. 5. 4 MAJOR NERVE PLEXUSES 1. Cervical plexus 2. Brachial plexus 3. Lumbar plexus 4. Sacral plexus *The nerve plexus that we are going to concentrate on is the Brachial Plexus.
  6. 6. BRACHIAL PLEXUS • The brachial plexus consists of spinal nerves C5 to T1 (fifth cervical nerve to the first thoracic nerve) • The brachial plexus is located under the arm in the axillary region of the body. • The brachial plexus innervates muscles of the pectoral girdle and the upper extremity.
  7. 7. ROOTS, TRUNKS, DIVISIONS, CORDS, BRANCHES The Brachial Plexus is divided into Roots, Trunks, Divisions, Cords, and Branches. • There are 5 roots from C5 to T1 • There are 3 trunks (superior, middle, and inferior) • There are 2 divisions (anterior and posterior) • There are 5 branches (musculocutaneous n., axillary n., radial n., median n., and ulnar n.)
  8. 8. BRACHIAL PLEXUS
  9. 9. 5 BRANCHES OF BRACHIAL PLEXUS Nerves innervate skeletal muscles of the pectoral girdle and the upper extremity • Musculocutaneous n.= innervates flexor muscles of the brachium (biceps brachii, brachialis, coracobrachialis muscles) • Axillary n.= innervates deltoid and teres minor muscles • Radial n.= innervates extensor muscles of the brachium and antebrachium (triceps brachii, anconeus, extensor carpi radialis, extensor carpi ilnaris, and brachioradialis muscles) • Median n.= innervates flexor muscles of the antebrachium (flexor carpi radialis and Palmaris longus) pronator quadrates, pronator teres and digital flexors of the hand • Ulnar n.= innervates flexor carpi ulnaris, flexor digitorum profundus, adductor pollicis, and small digital muscles of the hand
  10. 10. 5 BRANCHES OF BRACHIAL PLEXUS cont’d
  11. 11. IMAGE REFERENCES • All images from (Schneider, Hankin, Morse, Bennett-Clarke, n.d.) • Schneider, R., Hankin, M., Morse, D., & Bennett-Clarke, C. (n.d.). Anatomy & physiology Revealed (2.0). Retrieved from http://anatomy. mcgraw-hill.com/apr.html • www.commons.wikimedia.org

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