PCOL2605 Lecture Notes - Lecture 6: Autonomic Nervous System, Cranial Nerves, Postganglionic Nerve Fibers
23 Oct 2018
School
Department
Course
Professor
Document Summary
The autonomic nervous system regulates functions which are largely outside of our voluntary control. Parasympathetic and sympathetic cannot function without the central nervous system. Enteric ns functions independently from the cns, it is closely interconnected with the sympathetic and parasympathetic systems. The parasympathetic nerves leave the cns from 2 separate locations. The cranial outflow consists of the cranial nerves 3 (oculomotor), vii (facial), ix (glossopharyngeal), The sacral outflow leaves through sacral segments 2 to 4. The parasympathetic nervous system is sometimes called the craniosacral outflow. Leave the cns from the thoracic and lumbar regions of spinal cord. The sympathetic nervous system is sometimes called the thoracolumbar outflow. After leaving the cns the parasympathetic and sympathetic nervous systems basically consist of: Cluster of neural cell bodies where pre and post meet. Some organs receive both para and symp innervation e. g. heart.
