BIOS1171 Lecture 1: Lecture 1 Basic Structure 1, 2 & 3
22 Aug 2018
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Afferent fibres: carry sensory info (touch, pressure, pain, temp. Efferent fibres: carry motor info (voluntary control of muscles. Cerebellum: 2 hemispheres (cerebrum, lateral aspect is curved like a sphere, medial aspect is on a flat plane, cerebellum, brain stem. "s lin e ls: looks like h, sorting information; where decisions are made, contains nuclei (group of cell bodies, contains cell bodies of neurons e ng. Contains pathways/tracts (ascending and descending tracts: white matter, attains white colour due to myelin (produced by oligodendrocytes from cns or by. Schwann cells from pns: contains columns (pathways/tracts) which are ascending/descending, contains columns, central canal, hole in the middle containing cerebral spinal fluid, fibres pathways/tracts columns (dorsal/ventral/lateral) white matter. Reflex arc: one side of the spinal cord symmetrical of the other, formed by sensory & motor neurons dorsal root. Dermatomes: nipple innervated by t4, layout of sensory & motor nerves is similar in each person. Basic structure 1, 2 & 3: lecture 1.
