Unit 2: The Biological Bases Of Behavior Flashcards
Basic building block
Neuron
Links between biology and behavior
Biological psychology
Receives messages
Dendrite
Life-support center
Cell body
Pass messages, neural impulse
Axon
Forms junctions
Terminal branches
Insulates and speeds neural implies, fatty tissue
Myelin sheath
Electrical impulse
Action potential
Ready to activate; polarized
Resting potential
Minimum level of stimulation; depolarized
Stimulus threshold
Neuron cannot fire until it regains polarity
Refractory period
Junction, communication point between
Synapse
Chemical messages
Neurotransmitter
Muscle action, memory; Alzheimer’s
Acetylcholine
Movement, learning, attention, and emotion; excess dopamine( schizophrenia) starved of dopamine( Parkinson’s)
Dopamine
Mood; depression
Serotonin
Alertness and arousal; depress
Norepinephrine
Inhibitory; seizures, tremors, and insomnia
GABA
Excitatory; migraines
Glutamate
Pain control and pleasure
Endorphins
Block the neurotransmitters; inhibits
Antagonists