Chapter 3 - Biopsychology Flashcards
the state of readiness of a neuron membrane’s potential between signals
resting potential
cell body
soma
secretes hormones that regulate blood sugar
pancreas
structure in the temporal lobe associated with learning and memory
hippocampus
division of the brain located between the forebrain and the hindbrain; contains the reticular formation
midbrain
specific version of a gene
allele
asserts our genes set the boundaries within which we operate, and our environment interacts with the genes to determine where in that range we will fall
range of reaction
level of charge in the membrane that causes the neuron to become active
threshold of excitation
strip of cortex in the temporal lobe that is responsible for processing auditory information
auditory cortex
fatty substance that insulates axons
myelin sheath
midbrain structure important in regulating the sleep/wake cycle, arousal, alertness, and motor activity
reticular formation
study of gene-environment interactions, such as how the same genotype leads to different phenotypes
epigenetics
allele whose phenotype will be expressed in an individual that possesses that allele
dominant allele
involved in stress-related activities and functions
sympathetic nervous system
bump or ridge on the cerebral cortex
gyrus
plural: gyri
largest part of the brain, containing the cerebral cortex, the thalamus, and the limbic system, among other structures
forebrain
helix-shaped molecule made of nucleotide base pairs
deoxyribonucleic acid (DNA)
surface of the brain that is associated with our highest mental capabilities
cerebral cortex
thick band of neural fibers connecting the brain’s two hemispheres
corpus callosum
genetic makeup of an individual
genotype
incoming signal from another neuron is either sufficient or insufficient to reach the threshold of excitation
all-or-none
secretes hormones that regulate growth, metabolism, and appetite
thyroid
protein on the cell surface where neurotransmitters attach
receptor
individual’s inheritable physical characteristics
phenotype
hindbrain structure that connects the brain and spinal cord; involved in regulating brain activity during sleep
pons
long strand of genetic information
chromosome
twins who develop from two different eggs fertilized by different sperm, so their genetic material varies the same as in non-twin siblings
fraternal twins
axon terminal containing synaptic vesicles
terminal button
imaging technique in which a computer coordinates and integrates multiple x-rays of a given area
computerized tomography (CT) scan
cell membrane that allows smaller molecules or molecules without an electrical charge to pass through it, while stopping larger or highly charged molecules
semipermeable membrane
neurotransmitter is pumped back into the neuron that released it
reuptake
important for speech comprehension
Wernicke’s area
consisting of two different alleles
heterozygous
drugs that treat psychiatric symptoms by restoring neurotransmitter balance
psychotropic medication
sequence of DNA that controls or partially controls physical characteristics
gene
cells in the nervous system that act as interconnected information processors, which are essential for all of the asks of the nervous system
neurons