NEU 211 Lecture Notes - Lecture 1: Frontal Lobe, Apma Language, Lateral Sulcus
18 May 2016
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Document Summary
Neurohistology: microscopic study of the structure of tissues in the brain. Nissl stain: stain that stains clumps of material surrounding the nuclei of neurons and all the nuclei: distinguishes neurons and glia, enables histologists to study the arrangement (cytoarchitecture) of neurons in different parts of brain. Neurons are terminally differentiated cells; this separates them from other cells: otherwise they are mostly the same (proteins, translation) Afferent (coming in to nervous system sensory) Neurons: sense changes in the environment, communicate these changes to other neurons, command the body"s responses to these sensations. Can be classified according to total number of neurites (axons/dendrites) that extend: unipolar, bipolar, multipolar. Can be classified on connections: primary sensory neurons, motor neurons, interneurons. Cytoplasm of axon terminal differs from that of axon it contains small bubbles of membrane (synaptic vesicles) In the axon, there is no rough er that extends and there are very few/if any free ribosomes no protein synthesis.
