Ch14_SpinalCord

Ch14_SpinalCord - h14 The Spinal Cord Spinal cord Part of...

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Unformatted text preview: h14 The Spinal Cord Spinal cord Part of the Central Nervous System Sends afferent/efferent signals towards/away from the brain Process & integrates info Responsible for reflexes Fig 14.1 The spinal cord ends between L1 & L2 Position in body: • Foramen Magnum Î L1/L2 (conus medullaris) • Spinal Cord growth stops at about age 4 • Vertebral column ( bones) continues to grow until full height • Tapers to conus medullaris • Filum terminale originates at tip – Strand of fibrous tissue – Joins coccygeal ligament Protection of spinal cord Spinal meninges within spinal cavity – meninges (end at S2)- Epidural space- filled with connective tissue, fat. separates dura mater from walls of vertebral canal Cerebral Spinal Fluid- cushions cord Meninges Superficial Dura mater Arachnoid Pia mater –Denticulate ligaments-lateral extensions of the pia mater Deep Dura Mater in cranial cavity- anchors spinal cord superiorly Filum Terminale (coccygeal lig.)- anchors spinal cord inferiorly Fig 14.2 Fig 14.2 Dorsal root Transverse section of spinal cord • Superficial white matter • Deep grey matter H/butterfly shape • D.A.V.E....
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This note was uploaded on 11/10/2011 for the course PDBIO 220 taught by Professor Tomco during the Winter '09 term at BYU.

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Ch14_SpinalCord - h14 The Spinal Cord Spinal cord Part of...

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