PSYC 1100 Lecture Notes - Lecture 6: Peripheral Nervous System, Central Nervous System, Autonomic Nervous System

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Psych 1100- Lecture 5
- Autonomic Nervous System
- Controls smooth muscles in organs and vessels, glands, cardiac muscle
- Two branches worked in an antagonistic manner
- Two Systems:
- Sympathetic Branch: Fight/Flight Mechanisms
- Dilation of the pupil
- Accelerates heartbeat
- Parasympathetic system: Vegetative functions
- Constriction of the pupil
- Slows heartbeat
- Central Nervous System: Brain and spinal cord
- CNS Tracts cannot regenerate
- Nervous System is bilaterally symmetrical
- Dorsal vs Ventral: Back vs Front
- Medial vs Lateral: Close to middle vs farther away
- Rostral vs Caudal: Head vs Tail
- Ipsilateral vs Contralateral: Same side vs opposite side
- Other Terminology
- White Matter (Axon Bundles)
- Two kinds of bundles
- Nerves (In Peripheral Nervous System)
- Tracts for voluntary actions (In Central Nervous System)
- Signals from brian
- Gray Matter (Cell bodies, dendrites, synapses)
- 3 kinds of gray matter
- Ganglia (In Peripheral Nervous System)
- When organized in a clump, can be a nuclei if in CNS
- Nuclei (In Central Nervous System)
- Cortex (Covering some inner core, layered structure)
- Like the bark of a tree
- Layers of surface coverings
- Spinal Cord (in CNS): Tracts cannot regenerate
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