BIO 212 Lecture Notes - Lecture 12: Sympathetic Ganglion, Patellar Reflex, Neuroglia
11 Jan 2018
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Ch 13: the spinal cord, spinal nerves, and spinal reflexes. An introduction to the spinal cord, spinal nerves, and spinal reflexes: spinal reflexes, rapid, automatic nerve responses triggered by specific stimuli, controlled by spinal cord alone, not the brain. Is a mesh of collagen and elastic fibers. Is bound to underlying neural tissue: structures of the spinal cord, paired denticulate ligaments, extend from pia mater to dura mater, stabilize side-to-side movement, blood vessels, along surface of spinal pia mater, within subarachnoid space. Gray matter and white matter: sectional anatomy of the spinal cord, white matter. Is covered by a thick layer of white matter: white matter, consists of ascending and descending axons, organized in columns, contains axon bundles with specific functions, spinal cord is so highly organized: It is possible to predict results of injuries to specific areas. Spinal nerves and plexuses: anatomy of spinal nerves, each spinal cord segment:
