CDIS 4213 Lecture Notes - Lecture 19: Thermoreceptor, Retina, Cholinergic
16 Nov 2016
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Near or in each intervertebral foramen is dorsal root swelling (spinal ganglion)- afferent cell bodies. Past spinal ganglion, ventral and dorsal roots form single spinal nerve and exit intervertebral foramen. Autonomic nervous system (ans: division of pns that supplies smooth muscles and glands, also known as visceral efferent or involuntary system, divisions of ans are sympathetic (thoracolumbar) system and parasympathetic (craniosacral) system. Sympathetic nerves: being suddenly scared, depends on mainly what kind of environment you live in, review this image when studying. Receives output from thoracic and lumbar segments of spinal cord. Ganglia located near spinal column: parasympathetic system. Receives output from cranial and sacral portions of cns. Ganglia tend to be located peripherally near structures supplied: together, the systems maintain relatively constant internal body environment, remember gas and brake pedal, parasympathetic acts to conserve resources bodily resources after sympathetic has mobilized body for a threat.
