KNES 259 Lecture Notes - Lecture 10: Brainstem, Buoyancy, Cerebrospinal Fluid
31 Oct 2016
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Document Summary
Cranial meninges: three membranes enclose the brain and spinal cord. Functions: protect brain, supporting framework for vessels venous sinuses, enclose uid lled space (subarachnoid) vital to normal function of brain. Meningeal spaces: epidural: (dura-skull, potential space, only happens with injury (blood lling forces a space, subdural: (dura-arachnoid, potential space, similar to epidural, subarachnoid, actual space, contains csf, arteries, veins. Lots of redundancy if one area if damaged other parts compensate. Diencephalon: surrounds 3rd ventricle, 2 halves joined by intermediate mass, composed of right/left thalamus and hypothalamus, all sensory information come into diencephalon except smell (directly synapses on its own through cerebrum) and gures out where to send it. Cerebellum: posterior to pons and medulla, re nes movements received from cerebrum, arbor. Vitae (tree of life) tree like con guration in sagittal section of cerebellum. Brainstem: everything inferior of diencephalon, autonomic functions (breathing, hr, ght or.
