BIOL 030 Lecture Notes - Lecture 6: Central Nervous System, Nervous Tissue, Neuroglia
19 May 2020
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Document Summary
Brain is known as the integration center. Efferent sent from the brain to the target. Cns central nervous system: brian and spinal cord. Pns peripheral nervous system: spinal nerves, cranial nerves. Two types of cells: neurons, major functional unit of the nervous system. High metabolic rate: gila (neuroglia, supporting cells. Schwann cell includes axon and myelin: produce myelin sheath around neuronal axons. Organization of nervous tissue: nervous tissue is highly cellular, composed primarily of soma and processes, white matter: Regions of the brain: during embryonic development there arises distinct regions of the cephalic portion of the developing neural tube, cerebrum. Divided into 2 cerebral hemispheres: diencephalon, midbrain, pons, cerebellum, medulla oblongata. Frontal lobe: judgement, decision making, behavior social and sexual, memory. Diencephalon: thalamus, hypothalamus, intermediate mass, pineal gland, third ventricle. Midbrain: cerebral peduncles, corpora quadrigemina, superior and inferior colliculi, cerebral aqueduct. Brainstem: pons, medulla oblongata, autonomic nerve centers.
