HTHSCI 2H03 Lecture Notes - Lecture 11: Xerostomia, Autonomic Ganglion, Decongestant
2 May 2016
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Document Summary
Peripheral nervous system: all of the nervous tissue outside of the cns, including sensory and motor neurons (i. e. any nerves that enter or leave the cns) Afferent sensory neurons: carry signals from sensory organs and periphery to the cns. Provide input to modulate the function of the efferent division. Efferent motor neurons: carry signals from the cns to control the activities of the muscles and glands. Somatic nervous system: controls voluntary movements by activating skeletal muscles. Autonomic nervous system: controls involuntary responses by influencing organs, glands and smooth muscles. Further divided into the sympathetic and parasympathetic nervous systems. The somatic nervous system carries signals from sensory organs and periphery to the cns. Signals are transmitted from cholinergic neurons to nicotinic cholinergic receptors. Nicotinic receptors: ligand-gated (i. e. acetylcholine-gated) ion channels induces the opening of sodium ion channels and depolarization of the neuron.
