|
absolute
refractory period
|
impulse
|
|
acetylcholine
|
inhibition
- increase potassium permeability
|
|
afferent
neuron
|
insulation
|
|
afferent
neuron
|
interneuron
|
|
all
or none
|
IPSP-
inhibitory post synaptic potential
|
|
alter
enzyme activity
|
membrane
- insulation
|
|
alter
rate of membrane transport
|
mesodermic
origin - steroid hormones
|
|
autonomic
nerves
|
myelin
sheath
|
|
calcium
shock - low calcium concentration
|
negative
feedback
|
|
calcium
tetany = calcium shock
|
negative
inside cell (-70 mV)
|
|
cholinesterase
|
neurohumor
|
|
concentration
of substances in ECF
|
nodes
of Ranvier
|
|
delay
in propagation at the synapse - why?
|
one
way propagation of impulses
|
|
depolarization
|
osmotic
pressure of the blood
|
|
ECF
- extracellular fluid
|
paracrines
and parahormones
|
|
ectodermic
origin - amine hormones
|
potassium
permeability
|
|
efferent
neuron
|
receptors
or action of other neurons
|
|
electrical
stimulation
|
reflex
arc - fast response
|
|
endocrine
gland
|
relative
refractory period
|
|
endodermic
origin - protein hormones
|
repolarization
|
|
epinephrine
(adrenaline)
|
resting
potential
|
|
excitation
- increase sodium permeability
|
saltatory
conduction
|
|
excitation
of less sensitive sensory cells
|
sodium
permeability
|
|
EPSP
- excitatory post synaptic potential
|
sodium/potassium
pump
|
|
frequency
of impulses
|
somatic
nerves
|
|
generator
potential
|
spontaneous
stimulation
|
|
greater
area affected
|
supportive
cells (glial, Schwann, etc.)
|
|
growth,
differentiation, reproduction, metabolism
|
synapse
|
|
hormonal
or other chemical stimulation
|
target
cells/tissues/organs
|
|
hyperpolarization
|
threshold
|