BIO 12 Lecture Notes - Lecture 2: Dura Mater, Pia Mater, Cerebral Cortex
14 Sep 2020
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Document Summary
An intricate mass of soft nervous tissue. Weighs about 1400 g (3 lbs) and consists of 100 billion neurons. Further protection is given by three (3) membranous coverings called meninges, and the cerebrospinal fluid. Cerebral cortex, the gray matter, is the outer cortex and considered the highest center of reasoning and intellect. White matter - located in the deeper part of the cerebral cortex, consists of myelinated nerve tracts. Adequate oxygenated blood supply is needed by the brain to prevent irreversible brain damage. Without oxygen, brain damage will occur within 1 to 8 minutes. Process of storing old information we have learned and packaging and storing of new information by the brain. According to scientists, the hippocampus of the limbic system, acts like a receptionist, deciding the significance of the event and determining where in the brain the information should be stored.
