Overall Flashcards
vestigal traits
no longer adaptive
byproducts
no actual benefit
genotype
inherited genes
phenotype
physical implementation of genes
concordance rate
one twin has trait, liklihood of other twin having trait
diathesis-stress model
genes code for susceptibility of certain disorder
covariance
IV and DV co-occur
temporal precedence
IV clearly comes before DV
Causation does not equal …
correlation
central tendencies
summarizes entire data set
variability
how sample is spread out from mean in one or both directions
homology
any similarity that exists because of species common ancestry
analogy
similarity that exists because of covergent evolution
neuron
nerve cell in the brain and nervous system
sensory neuron
carry messages from sensory organs to CNS
interneuron
carry messages from one set of neurons to another
motor neuron
carry messages from CNS to muscles and glands
action potential
1) Synaptic vesicles filled with NT, fuse with cell membrane and burst, releasing NTs into synaptic cleft
2) NTs travel across synaptic cleft and bind with postsynaptic cell binding sites
3) Electrical charge within cell body
4) New Action potential begins in post synaptic cell
Excitatory Synaptic Potential
increase rate of action potentials by allowing NA+ into cell
Inhibitory Synaptic Potential
decrease rate of action potentials by allowing Cl- into cell or K+ out of cell
Diffusion
NTs drift away into larger extracellular space
Degradation
chemical reaction causes the NTs to break down
Reuptake
NTs reabsorbed back into the presynaptic cell
Dopamine
voluntary muscle movement, learning, memory, emotion