Health Sciences 2250A/B Study Guide - Midterm Guide: Intrafusal Muscle Fiber, Alpha Motor Neuron, Golgi Tendon Organ
2 Dec 2017
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Ans plays an important role in maintaining homeostatic control: ans breaks down into pns and sns, pns (cid:862)(cid:396)est a(cid:374)d digest(cid:863, sns fight or flight. What are the 2 main divisions: pns (2 neuron system), sns, autonomic ganglia: 1. Differences in anatomical and neurochemical organization of sns: in pns found within target tissues. Ach released by pre/postganglionic at the effector. Body speeds up, tenses up, functions not critical to survival shut down. Ne released by postganglionic at the effector. Complementary effect shared by the pns and sns: saliva. Cooperative effect shared by pns and sns (working together to achieve same goal: sexual function, bladder control. 1 preganglionic connection to postganglionic neuron for all effectors, except adrenal gland. 2 preganglionic to chromaffin cell in adrenal gland. 4 postganglionic neuron to effector organ releases na, except adrenal gland (a/na) 5 na acts at beta (heart and corornary blood vessels) or alpha receptors (blood vessels.
