Shared Flashcard Set

Details

Psych Unit 1
Nat Psych
50
Psychology
Undergraduate 1
10/10/2011

Additional Psychology Flashcards

 


 

Cards

Term
neurons
Definition
Cells that specialize in communication
Term
3 elements of neurons
Definition
reception, conduction, transmission
Term
sensory neurons
Definition
Physical world > spinal cord. Also called afferent. Somatosensory- from muscles to brain.
Term
motor neurons
Definition
Direct muscles to do their thing. Efferent. Interneurons- within circuit.
Term
neural networks
Definition
circuits of neurons
Term
dendrites
Definition
short branchlike appendages. receptive region.
Term
axon
Definition
narrow outgrowth, info is transmitted.
Term
terminal buttons
Definition
small nodules, release chemical signals from neuron to synapse
Term
synapse
Definition
site for chem communication, contains extracellular fluid.
Term
myelin sheath
Definition
fatty material, made of glial cells, that insulate the axon and allows for rapid movement of impulses.
Term
nodes of Ranvier
Definition
small gaps of exposed axon, between myelin sheath, action potentials are transferred.
Term
resting membrane potential
Definition
different charge of neuron. charge is NEG on inside.
Term
propagation
Definition
depolarization moving down the axon
Term
neurotransmitters
Definition
carry signals across cleft, bind to postsynaptic receptor. produces exitory/inhibitory signal.
Term
reuptake
Definition
neurotransmitter is taken back into presynaptic terminal buttons, stopping its activity
Term
enzyme deactivation
Definition
occurs when enzyme destroys transmitter substance in the cleft
Term
autoreceptors
Definition
detect how much transmitter has been released into the synapse
Term
antagonists
Definition
inhibits actions of specific neurotransmitter
Term
agonists
Definition
enhances actions of neurotransmitter
Term
ACh
Definition
motor control over muscles, learning, memory. Botox.
Term
Epinephrine
Definition
adrenaline, energy
Term
norepinephrine
Definition
arousal and vigilance
Term
serotonin
Definition
emotional states, impulsiveness, dreaming
Term
dopamine
Definition
reward and motivation
Term
GABA
Definition
inhibition of ac potentials, anxiety and intoxication
Term
glutamate
Definition
enhances action potentials, learning/memory
Term
endorphins
Definition
pain reductions, reward
Term
substance P
Definition
pain perception, mood, anxiety
Term
CNS
Definition
spinal cord + brain
Term
all other nervous cells
Definition
PNS
Term
gray matter
Definition
dominated by neurons' cell bodies
Term
white matter
Definition
axon and fatty sheaths make up
Term
reticular formation
Definition
networks of neurons that project into cerebral cortex.
Term
subcortical structures
Definition
these structures control emotions and basic drives
Term
hypothalamus
Definition
master regulatory structure. temp, emotion, sexual behavior, motivation.
Term
thalamus
Definition
the gateway to the cortex.
Term
hippocampus
Definition
important for memory, etc.
Term
amygdala
Definition
learning to associate things with emotional responses
Term
basal ganglia
Definition
responsible for planning and producing movement
Term
cerebral cortex
Definition
outer layer of brain tissue
Term
occipital lobe
Definition
back of brain, lobe for vision
Term
pariental lobes
Definition
important for sense of touch and layout of environment
Term
temporal lobe
Definition
lower region of brain, important for processing auditory information
Term
prefrontal cortex
Definition
region of frontal lobes important for attention, memory, and behavior
Term
somatic nervous system
Definition
transmits signals takes care of skin muscles joints
Term
automatic nervous system
Definition
stimulates glands, and internal organs
Term
sympathetic division of ANS
Definition
prepares body for action
Term
parasympathetic division of ANS
Definition
returns the body to its resting state
Term
endocrine system
Definition
communication network that uses hormones to influence thoughts
Term
hormones
Definition
substances released from endocrine glands, travel to targeted tissues
Supporting users have an ad free experience!