NURS 106 Lecture Notes - Lecture 20: Sympathetic Ganglion, Autonomic Ganglion, Somatic Nervous System
22 Oct 2018
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Document Summary
A part of the peripheral nervous system. 2 motor neurons to connect cns to organ (preganglionic and postganglionic neurons) In brain or spinal cord to autonomic ganglion, (myelinated type b. From autonomic ganglion to visceral effectors (unmyelinated type c fibre) Parasympathetic and sympathetic: origin sites, different length of fibres. Parasympathetic - craniosacral (cn iii, vii, ix & x and s2 to s4) Parasympathetic - away from brain stem, intramural (walls of hollow organs: location of their ganglion. In ganglia and in between postganglionic neuron and effector. Releases ach in all preganglionic neurons in parasympathetic postganglionic neurons neurons that innervate most sweat glands. Cortex on the outside (endocrine), medulla on the inside (sympathetic) , which secretes information to the capillaries (versus using neurons) Receptors in the sympathetic and the parasympathetic postganglionic neurons. In the effector glands , parasympathetic postganglionic neurons, or sweat. Ach to ne/e , the final receptor at the end of the sympathetic pathway.
