PHGY 209 Chapter Notes - Chapter --: Intracranial Pressure, Arachnoid Mater, Heart Rate
21 Nov 2016
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6. 18 autonomic nervous system: efferent innervation tissues other than skeletal muscle is by way of the autonomic nervous system, enteric nervous system: neuronal network in wall of gastrointestinal tract, subdivision of autonomic efferent nervous system. Division of ans: subdivision of the autonomic nervous system into sympathetic and parasympathetic. Level at which leave cns: from thoracic & lumbar, from brainstem and regions of spinal cord sacral portion of spinal cord. Location ganglia: close to spinal cord, form two chains (1 on each, lie within or very close to organs side of cord) known as sympathetic trunks. Overall patterns: activity typically occurs body-wide, activate specific organs in finely tailored pattern. Neurotransmitter acetylcholine between pre: acetylcholine between. Increased intracranial pressure, causes seizures and loss of consciousness. If outflow obstructed, cerebrospinal fluid accumulates: hydrocephalus: compression of brain"s blood vessels: inadequate blood flow to neurons, neuronal damage, cognitive dysfunction.
