BILD 2 Review Session 1 Fall 2011

BILD 2 Review Session 1 Fall 2011 - BILD 2 Review Session I...

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BILD 2 Review Session I Fall 2011 w/ Dr. J. Leutgeb Sam Rana
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0. How to get the most out of the Review Session A. When a New Slide Comes Up 1. I will pause / summarize for 20 seconds 2. Spend this time copying down the letters / topics. 3. Don’t copy down every word by each number; just 2 or 3 and leave space. B. When I start Talking 1. Listen! 2. I’ll pause 10 seconds after I finish a number – summarize what I just said and write that down. 3. I’ll cover it all again when we get to the diagram. I. Information Processing A. Overview 1. Sensory Input – “Afferent” Neurons 2. Integration - Interneurons 3. Motor Output – “Efferent” Neurons
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B. The Knee Jerk Reflex 1. Tap knee -> quadriceps muscle is stretched -> sensory info carried via afferent pathways to the spinal cord. 2. Afferent sensory neuron synapses onto: a. Interneuron which inhibits contraction of the hamstring muscle. b. Efferent Motor Neuron which stretches the quadriceps muscle -> knee jerk 3. Example of a simple reflex – requires no input from the brain. C. Components of the PNS 1. Afferent Neurons 2. Efferent Neurons a. Motor b. Autonomic i. Sympathetic – “Fight or flight” ii. Parasympathetic – “Rest and digest” iii. Enteric
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D. Components of the CNS 1. Spinal Cord a. White Matter on outside i. Myelinated Axons b. Grey Matter on Inside i. Cell Bodies ii. Unmyelinated axons iii. Dendrites 2. The Brain a. Grey Matter on outside b. White matter on inside c. Ventricles filled with CSF that: i. Cushions Brain ii. Supplies Nutrients iii. Used to detect changes in body fluids
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A. The Brainstem 1. Midbrain a. Reception / Integration of sensory info. 2. Pons b. Regulates breathing centers in the medulla. 3. Medulla c. Controls autonomic functions like: i. Breathing ii. CV activity iii. Swallowing iv. Vomiting v. Digestion 4. Reticular Formation – Suppresses inputs B. Cerebellum 1. Coordination 2. Learning and remembering motor skills.
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This note was uploaded on 01/12/2012 for the course BILD 2 taught by Professor Schroeder during the Spring '08 term at UCSD.

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BILD 2 Review Session 1 Fall 2011 - BILD 2 Review Session I...

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