PSYC 2410 Lecture Notes - Lecture 3: Spinal Nerve, Vertebra, Grey Matter
4 Dec 2014
School
Department
Course
Professor
Document Summary
Nervous system anatomy and functions (general organization, cellular organization, and gross anatomical organization) Central nervous system cns (brain and spinal cord) Lumbar region back below chest area 5 vertebrae. The efferent nerves synapse in a ganglion (pl. Ganglia: clusters of nerve cells (neurons) in pns. Brain (cranial nerves ii, vii, ix, x) give origin to fibers. Each organ receives innervations from both and they generally act in an opposing fashion, with exceptions! Dura mater- the toughest (dura = hard, latin) Arachnoid layer web like structure (arakni = spider, greek) Pia mater thin, adheres closely to surface of cns (sulci and fissures of brain, plus spinal cord) Meningitis = inflammation of the meninges; caused by virus, bacteria, etc. can be life- threatening because of proximity to brain/spinal cord. Produced by the choroid plexus (a network of blood vessels on pia mater that protrude into brain cavities) Contained in: subarachnoid space and various cavities of the brain.
