Chapter13CNSPart2Marieb

Chapter13CNSPart2Marieb - Ch 13: Central Nervous System:...

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Ch 13: Central Nervous System: Part 2 Explain spinal cord anatomy, including gray and white matter and meninges (give the general functions of this organ). Discuss the structure and functions of the spinal nerves and plexuses. Describe the structural components of reflexes. 1. Meninges 2. CSF 3. Spinal Cord and Spinal Nerves Developed by John Gallagher, MS, DVM
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1. Cranial Meninges 1. Dura mater - strong, "tough mother" a. falx cerebri b. falx cerebelli c. tentorium cerebelli 2. Arachnoid - spidery, holds blood vessels 3. Pia mater - "delicate mother" Note: Subdural hematoma Three layers:
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The meninges
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2. CSF: Cerebrospinal Fluid Formation in ventricles by specialized ependymal cells of choroid plexus (~500 mL/day; total volume ~ 150 mL) Functions transport medium (nutrients, waste) shock absorption buoyancy (floats the brain) CSF circulation: Ventricles → central canal → subarachnoid space An important diagnostic tool.
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Hydrocephalus?
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This is where the CSF produced in the choroid plexuses of the ventricles and which has circulated into the subarachnoid space is reabsorbed. Longitudinal
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This note was uploaded on 12/16/2011 for the course BIOLOGY 101 taught by Professor Mr.wallace during the Fall '11 term at Montgomery College.

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Chapter13CNSPart2Marieb - Ch 13: Central Nervous System:...

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