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CPHS Adv Psych 1D

CPHS Adv. Psych. Brain 1D

Autonomic Nervous System The part of the peripheral nervous system that carries messages between the central nervous system and the internal organs.
Parathyroids Four tiny glands embedded in the thyroid; they secrete parathormone.
Sympathetic Division Branch of the autonomic nervous sytem, it prepares the body for quick action in an emergency.
Parathormone Hormone that controls the levels of calcium and phosphate in the blood and tissue fluids.
Neural impulse or action potential The firing of a nerve cell.
Synaptic Space Tiny gap between the axon terminal of one neuron and the dendrites or cell body of the next neuron.
Graded Potential A shift in the electrical charge in a tiny area of a neuron.
Synapse Area composed of the axon terminal of one neuron, the synaptic space, and the dendrite or cell body of the next neuron.
Threshold of Excitation The level an impulse must exceed to cause a neuron to fire.
Synaptic Vesicles Tiny sacs in a synaptic knob that release chemicals into the synapse.
Created by: Rebecca3