AUTONOMIC NERVOUS SYSTEM

AUTONOMIC NERVOUS SYSTEM - AUTONOMIC NERVOUS SYSTEM...

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Unformatted text preview: AUTONOMIC NERVOUS SYSTEM Regulates the activities of smooth muscle, cardiac muscle, and certain glands. Consists of: visceral efferent neurons, visceral afferent neurons with receptors Functionally it operates without conscious control. The system is regulated by centers in the brain, in particular by the hypothalamus and medulla oblongata. Comparison of the Somatic and Autonomic Systems Both have motor fibers. Differ in their effectors, in their pathways, and in target organ responses to their neurotransmitters. Somatic System ANS Stimulates skeletal muscles Stimulates cardiac muscle, smooth muscle, and glands Motor neuron cell body in CNS, one neuron extends to effector organ. Motor unit is 2 neuron chain. Preganglionic neuron cell body in s.c., synapses outside CNS, postganglionic axon extends to the effector organ....
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This note was uploaded on 11/22/2011 for the course BSC BSC1085 taught by Professor Sharonsimpson during the Fall '10 term at Broward College.

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AUTONOMIC NERVOUS SYSTEM - AUTONOMIC NERVOUS SYSTEM...

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