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Nervous System (Divisions of Nervous System/
Peripheral Nervous System /
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Nervous System
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Nerve Physiology
Action Potential: nerve impulse is transmitted during action potential, strong enough stimulation or nerve impulse causes Na+ gates to open
Types of Response
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Summation: occurs when another stimulus of same type arrives before effect of first stimulus of same type arrives before effect of first stimulus wears off, additive effect of two stimuli
Resting Membrane Potential: Nerve at rest or inactive, membrane at rest is polarized fewer potassium (k+) ions inside; more sodium (Na+) ions outside (less negative inside)
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Parts of the Brain
Diencephalon: superior to brain stem, surrounded by cerebrum
Brain Stem: made of medulla oblongata, pons, midbrain
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Functions
Integrative function: analyzes sensory information, stores some aspects, and makes decisions regarding appropriate behaviors
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