Chapter 3- The Biological Bases Of Behavior Flashcards
Contains the cell nucleus and much of the chemical machinery common to most cells
Soma
Individual cells in the nervous system that receive, integrate, and transmit information
Neurons
Parts of the neuron that are specialized to receive information
Dendrites
A long, thin fiber that transmits signals away from the soma to other neurons or to muscles or glands
Axon
Small knobs that secrete chemicals called neurotransmitters
Terminal Buttons
A junction where information is transmitted from one neuron to another
Synapse
Cells found throughout the nervous system that provide various types of support for neurons
Glia
A neuron’s stable, negative charge when the cell is inactive
Resting Potential
A very brief shift in a neuron’s electrical charge that travels along an axon
Action Potential
The minimum length of time after an action potential during which another action potential cannot begin
Absolute Refractory Period
Chemicals that transmit information from one neuron to another
Neurotransmitters
A voltage change at a receptor site on a post synaptic cell membrane
Post synaptic Potential (PSP)
A chemical that mimics the action of a neurotransmitter
An Agonist
A chemical that opposes the action of a neurotransmitter
Antagonist
Released by motor neurons controlling skeletal muscles
Contributes to the regulation of attention, arousal and memory
Associated with Alzheimer’s Disease
Acetylcholine