MCELLBI C61 Chapter Notes - Chapter 7: Tegmentum, Enkephalin, Chorea
19 Nov 2016
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Neuromuscular junction: acetylcholine, gaba, and glutamate act on both ionotropic receptors and gpcrs. Ionotropic achrs are positive ion channels for na+ and also mediate communication between nerves and skeletal muscles in humans and other vertebrate animals. Cns, pns: cns consists of the brain and spinal cord. Also part of pns: connections from brain and spinal cord to muscles throughout the body, allowing for control of body movements. Cranial nerves: enter and exit bain at brainstem and olfactory bulb. Facial (face and its sensation and movement, saliva, lacriment) Vagus (pharynx, larynx, internal organs of chest and abdomen; taste, heart rate, resp) Autonomic nervous system: sympathetic, parasympathetic: sympathetic, parasympathetic--autonomic nervous system regulates various body organs and internal functions, such as heart rate, blood pressure, respiration, and digestion. Organs receive input from both sympathetic and parasympathetic. Sympathetic: increases heart rate, dilates lung airways, dilates pupils, inhibits salivation and bladder from voiding, decreases intestinal utility. Parasympathetic: rest and recuperation, opposite of all above.
