BISC306 Lecture Notes - Lecture 10: Brain Structure And Function, Somatotopic Arrangement, Cerebral Cortex
5 Oct 2016
School
Department
Course
Professor
Document Summary
Brain structure & function: brain structure and function, cerebrum-information processing; motivation of functions and actions, cerebellum-coordination of motor processing & muscle coordination; movement of body parts b. i. Comprises 10% of cns but 50% of the neurons b. ii. Coordinates motor behavior, maintain balance, and regulating muscle tone: diencephalon-thalamus, hypothalamus c. i. Thalamus-sensory switchboard; relays much of the sensory input to and motor output from the cerebral cortex (sense of smell does not pass through straight to cerebral cortex) c. ii. Hypothalamus-important to controlling hunger, thirst, and body temperature c. ii. 1. Involved in secretion of many hormones: telencephalon-cerebral cortex & basal ganglia d. i. Information to cerebral cortex: brainstem-medulla, pons, midbrain e. i. Important in the control of heart rate, blood pressure, digestion, breathing e. ii. Contains reticular formation which controls consciousness and arousal e. iii. Reticular formation-role with consciousness, arousal, sleep/wake cycle: organization of cerebral cortex, neurons involved in a common function are found together; a common theme of nervous systems, 2 cerebral hemispheres b. i.
