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Unformatted text preview: tly to adrenal
preganglionic axons pass through and go DIRECTLY to the ADRENAL gland
MEDULLA to synapse with effector cells there. PARASYMPATHETIC DIVISION (craniosacral) -rest or repose system 1. Cell bodies of preganglionic neurons are located within CRANIAL NERVE NUCLEI in the brainstem or within LATERAL horns in the sacral region of the spinal cord. -comes out with the cranial nerves 2. Preganglionic axons from the brainstem are carried in cranial nerves III, VII, IX, X. Those from the sacral region are in PELVIC ____________________ NERVES. sacral
oculomotor(III) facial(VII) glossopharyngeal(IX) vagus(X) -both pre and post
3. Synapses with their postganglionic neurons are in TERMINAL GANGLIA on or release AcH near effector organs. target smooth muscles and glands of head viscera or thorax and abdomen, e.g. heart, lungs, esophagus, pancreas, liver, intestine, and upper colon 4. Postganglionic axons are unmyelinated and travel a _______________________ very short
distance to effectors. preganglionic axons from sacral region pass through pelvic nerves to
terminal ganglia near lower colon, bladder, reproductive organs ENTERIC NERVOUS SYSTEM 1. Consists of nerve plexuses within the wall of the DIGESTIVE TRACT. -plexus- intertwining of nerves
2. Includes sensory and ANS motor neurons between the digestive tract and CNS, and ____________________ neurons completely contained within the plexuses. enteric
3. Autonomic regulation of digestive processes involves these enteric neurons: a. SENSORY, detecting chemical composition of digestive contents and degree of _________________________ of digestive tract wall. stretch
b. MOTOR, that stimulate or ______________________ smooth muscle inhibit
contraction and glandular secretion. c. INTERNEURONS, that directly connect sensory to motor enteric neurons. 4. LOCAL REFLEXES can monitor and control digestive tract independently of CNS. 106 1...
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This document was uploaded on 03/12/2014 for the course KNES 2168 at UNC Charlotte.
- Fall '13