A215 Lab Nervous: CNS-2; Histology Ch. 6 (I,II.B, IV)!Parts of the CNS • Cerebrum • Cerebellum • Spinal CordCerebrum • Cortex (surface layer) of gray matter – Gray matter = substance containing the large cell bodies of neurons – White matter = substance containing the myelinated processes of neurons + nuclei of small glial cells • Region of lower nuclei density (lighter area)Cerebellum • Cortex of gray matter • Highly folded around thin core of white matterSpinal Cord (Gross structures)Spinal Cord • Contains Grey Matter and White Matter – Where? • Motor Neuron - anterior horn – cell body – Nucleus with dark Nucleolus – Chromatophilic substance (Nissl bodies) = Rough ER in nerve cells – Nerve cell processes • axon hillock - clear cytoplasmPituitary Gland • Posterior Lobe (neurohypophysis) – neural origins from hypothalamus – no neural cell bodies • Anterior Lobe (adenohypophysis) – highly cellular (nuclei dense) – more darkly stainedFill in the blanks!!(hint – layer)!Fill in the Blanks!!!Substance?!Substance?!(hint –
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