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BMS 301 (47)

Nervous system, brainstem, diencephalon, cerebellum, cerebrum, basal nuclei

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Colorado State University
Biomedical Science
BMS 301
Mark Frasier

12 October Definitions Neuron – nerve cell Synapse – point of connection between two neurons Pre-synaptic region (from neuron 1), synaptic cleft, post-synaptic region (from neuron 2) Propagate signal Allow processing of signal (modification) ↑ synapses, ↑ neurons → ↑ complex activities Circuit – group of neurons and synapses with a predictable firing pattern or outcome Nucleus – group or collection of cell bodies in CNS Ganglion – group of cell bodies in PNS General Anatomy Cerebrum Cerebellum Diencephalon Brainstem Listed in opposite evolutionary order Brainstem Medulla Most inferior Nuclei that control vital reflexes Cardiovascular Respiratory Gives rise to vagus (parasympathetic) Non-vital reflexes Coughing, sneezing, vomiting Pons Vital reflexes Respiratory Nuclei to and from cerebellum Midbrain Visual grasp reflex Auditory reflexes Diencephalon Thalamus Group of relay nuclei to cerebral cortex Switchboard Every sensory input goes through the thalamus Hypothalamus Master regulator of ANS (autonomic nervous system) Electrolyte balance, body temperature, food inta
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