PSYC 375 Chapter Notes - Chapter 3: Axon Hillock, Purkinje Cell, Motor Neuron
15 Jul 2016
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Document Summary
Camillo golgi immersed thin slice of brain tissue in solution of silver nitrate and other chemicals. Ns composed of network of interconnected bres > nerve net. Spaniard santiago tamon y cajal used golgi"s stain to study brain tissue of chick embryos. Parking cell carries info from cerebellum to rest of brain and spinal cord extremely branched dendrites-form fan shape cerebellem. 3. motor neurons extensive networks of dendrites, large cell bodies, long axons connected to muscles located in lower brainstem and spinal cord. Larger cell bodies - longer extensions (somatosensory, pyramidal, motor) carry info to distant parts of ns. Excitation and inhibition neurons receives 1000s of excitatory and inhibitory signals every second principle of summating ex/in signals. Ependymal cells produce and secrete csf walls of ventricles (cavities in brain) hydrocephalus: water brain buildup of pressure in brain; in infants, swelling of head when ow of csf is blocked can result in retardation.
