Central and peripheral nerves {parasympathetic autonomic system}| {parasympathetic nervous system} can stimulate micturition, defecation, alimentation, and sexual function.
Central and peripheral nerves {sympathetic autonomic system}| {sympathetic nervous system, function} can inhibit smooth-muscle cells.
functions
They regulate temperature by secreting sweat. They contribute to threat and aggression behaviors. They dilate pupils. They make hair stand on end. They control blood distribution throughout body by dilating or constricting blood vessels. They contribute to male sexual activities.
chemicals
Sympathetic-nervous-system postganglionic aminergic neurons synthesize and release noradrenaline. In sympathetic autonomic ganglia, presynaptic cholinergic fibers excite acetylcholine neurons and LHRH-like-peptide neurons. LHRH-like-peptide diffuses several micrometers to make slow excitatory postsynaptic potential (EPSP).
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Date Modified: 2022.0225