Anatomy and Cell Biology 3319 Lecture Notes - Lecture 15: Dorsal Root Ganglion, Anterior Ramus Of Spinal Nerve, Cervical Vertebrae
3 Jan 2018
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Vertebral column (review): bony framework of spinal cord, vertebrae surround the spinal cord, all have specific protuberances that we can use to identify, cervical, thoracic, lumbar, sacral & coccygeal. Intravertebral foramen: two vertebrae articulate to create an intervertebral foramen, spinal nerves exits the spinal canal through here, the space is very small and so there can be injuries here: pain. 31 pairs of spinal nerves: the vertebrae and nerves have a relationship. Once getting to c8 actually exits below c7 vertebrae. From then on all naming corresponding nerves exit under vertebrae. All nerves following c8 will exit below their corresponding vertebrae. Between c3 and c4: c4 spinal nerve since above the corresponding. Between t5 and t6: t5 spinal nerve since below the corresponding. Spinal cord: dorsal (sensory) and ventral (motor) side: dorsal rootlets and roots: sensory, ventral rootlets and roots: motor. Up until this point information has been segregated into motor and sensory information.
