Extra Terms Flashcards
less neurotransmitters, more receptors
down-regulation
more neurotransmitters, less receptors
up-regulation
tip of growing neuronal axon
growth cone
structural proteins that move proteins
microtubules/neurofilaments
bind to signals and convey signals between neurons
neurotransmitter transporters and receptors
bind and transport ions, establish and maintain electrical signals within cell
neurotransmitter channels and pumps
differences in __ across the cell membrane give the cell its charge
ion concentration
determines the vM by considering the concentration of ions and permeability of ions across the membrane
Goldman Equation
protein in the membrane that forms a channel from inside to outside
ion pore
produces refractory period by making sure the gate stays closed, regardless of the other gate and timer (Na+)
inactivation gate
time after stimulation where a cell cannot be stimulated again (Na+)
refractory period
allows for Na+ conductance to depolarize entire axon by delaying potassium channels from opening for 1msc after depolarization
delay mechanism
movement of action potential down the axon
propogation
basis of neural signaling
depolarization
movement of ions in vs. movement of ions out; the change in these cause fluctuation in vM
relative contributions
synthesized from tyrosine
catechloamines
synthesizes DA, NE, and E; produces negative feedback and shuts off DA and NE synthesis
tyrosine hydroxylase (THO)
synthesized from tryptophan
indolamines
naturally occurring drug that blocks AChE
physostigmine
blocks glycine and causes spinal seizures
strychnine
small and variable changes in the membrane potential
post-synaptic potentials (EPSPs and IPSPs)
used to open gates when neurotransmitter binds to metabotropic receptor
intracellular signaling molecule
using GABA to block incoming action potentials from reaching the synaptic terminal
presynaptic inhibition
recycles GABA back to glutamate for reuse
GABA transminase
synthesizes DA from L-Dopa, produces serotonin
5HTP Decarboxylase
