Unit 3 A Flashcards
Bio psych
Branch of psychology concerned w/ links b/w biology and behavior
Neuron
Nerve cell basic building block
Sensory neuron
Incoming info; brain to spinal cord
Motor neuron
Outgoing info; spinal cord to muscles and glands
Inter neuron
Neuron within brain
Dendrite
Branch of neuron; receives info
Axon
Cord of neuron ending in terminal fibers that passes messages to other neurons
Myelin sheath
Covers axon of some neurons and helps speed neural impulses
Action potential (neural impulse)
Electrical signal traveling down axon
Threshold
Level of stimulation required to trigger an impulse
Synapse
Tiny gap between tip o sending neuron and dendrite of receiving neuron
Reuptake
Neurotransmitter reabsorption by sending neuron
Endorphins
Opiatelike NT linked to pain control and to pleasure
Central nervous system CNS
Brain and spinal cord
Peripheral nervous system PNS
Sensory and motor neurons that connect to CNS