Week 2A

Week 2A - o o o o o o January 14, 2008 Week 2A Lecture 3:...

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o January 14, 2008 o Week 2A Lecture 3: Neuroanatomy o Announcements o Appendix I Autonomic nervous systems Look at it but don’t memorize o Appendix II Functions of Sympathetic and Parasympathetic NS Know overall pattern o Appendix III and IV Cranial Nerves Know these mentioned in lecture Names and functions o General Layout o Central Nervous System (CNS) Brain and spinal chord o Peripheral Nervous System (PNS) Outside brain and spinal chord Cranial and spinal nerves o CNS and PNS Level of injury very important o Major difference o PNS = more regeneration after damage Nerves in hand, foot, etc o CNS = damage is more permanent, much less growth/recovery
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o PNS comprised of: o 1. Somatic NS Processes aspects of external environment, and reacting to it Voluntary processes Running, etc. Mediated by the brain, you make some decision Your ability to run around and jump are controlled through these nerves Input from sensory nerves and your body reacts in some ways o 2. Autonomic NS Processes internal environment Involuntary functions Nerves that make your stomach churn Heart rate Stomach upset o You don’t really have control Parasympathetic and sympathetic work together to maintain homeostasis A. Parasysmpathetic: o Dominates at times of rest, relaxation When you’re at rest o Acts to conserve energy, equilibrium o Responsible for vegetative functions Involuntary body functions like decreases heart rate, stimulates digestion, etc B. Sympathetic: o Dominates during stress/emotional arousal
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o Fight-or-flight response Increases heart rate, decreases digestion, etc In alley way, hear trash can knocked over, this kicks in Adaptive functions o Autonomic system of the PNS o Sympathetic Overall mobilize energy Times of psychological arousal Butterflies in stomach General daily normal nervousness Related to directly where these neurons project to
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This note was uploaded on 04/24/2008 for the course PSYC 2 taught by Professor Wilson during the Winter '08 term at UCSD.

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Week 2A - o o o o o o January 14, 2008 Week 2A Lecture 3:...

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