BIOL373 Lecture Notes - Lecture 1: Limbic System, Arachnoid Granulation, Subdural Hematoma
4 Feb 2016
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Biol373 unit 2 central nervous system. Development: neural plate folds to become neural tube which is precursor to cns, neural crest cells arising from neural plate border becomes pns, and epidermis arises. Hind brain: cerebellum (movement), pons (integration centre), medulla (vital reflexes) Cerebral spinal fluid: flushes toxins out of brain, lubricant, cushions brain from impact, provides buoyancy; between layers of connective tissue (meninges) ventricle. protein), may indicate brain infection: lateral, third, fourth. Meninges dura mater (thick, fibrous, outer), arachnoid mater (spidery, thick, vascularized, where csf is absorbed into blood), pia mater (covers brain: subdural hematoma: pooling of blood under the dura mater. Spinal cord: oxygen: o2 readily crosses bbb, glucose: glucose transports for active transport, thoracic and lumbar: sympathetic, brain stem, sacral: parasympathetic, nothing off of cervical. Dorsal root ganglion collection of cell bodies. Gray matter sensory and motor nuclei. White matter ascending (sensory info going up) and descending (motor info going down) tracts.
