module 3a Flashcards
(25 cards)
what is the main interpreter of both your events in the body and outside
the brain
the cortex
the human nervous system
consciousness
the human nervous system
your _____ and _____ are problem solvers that send and recieve info from your body
Schwan and ooligondenrites
brain and spinal cord
nervous and sensory system
brain and spinal cord
what are specialized cells called
ganglion cells
guarded cells
supportive cells
glial cells
glial cells
Which is the main cell triggered by electrical impulses to send chemical messages in the brain?
a
Glial cells
b
Neurons
c
Histones
d
Building blocks
b
Neurons
________ are cells in the nervous system that provide support function.
glial cells
what cell is an extension of the cell body that receives chemical messages from other neurons
glial cells
dendrites
terminal button
terminal button
dendrites
The chemical messages are called neurotransmitters they can tell a neuron to activate or quiet down what is the scientific word for “quiet down”? “activate”?
inhibit. excite.
what do neurotransmitters bind to
receptors
As we grow and learn dendrites will __________________
spread and form new connection
constrict and produce more neurotransmitters
not change size because they never grow or shrink
spread and form new connection
what are ions
electrically charged particles
______ is found outside of the membrane while __________ is found inside the membrane
Na & protein; Potassium & iodide
Cl & K ; protein & Na
Na & Cl; K & protein
Na & Cl; K & protein
What is the resting voltage of a channel
-55mV
-70V
-85V
-70mV
-70mV
when the voltage is far away from zero the cell is considered
depolarized
polarized
repolarized
inhibitory
polarized
The more ________ the neuron is, the more likely it is to activate (action potential) and send a neurotransmitter
hyperpolarized
depolarized
polarized
depolarized
What is threshold value
-55mV
Why are the voltage gated channels lined up next to each other.
when they sense positive charge from nearby channel they will open their gates to continue the successive reaction
As cell channels begin to open concurrently they reach the end of the neuron what is this process called
repartition
action potential
propagation
propogation
what happens once the action potential reaches the axon terminal
triggers release of neurotransmitters to the next neuron
what does an excitatory neurotransmitter do? inhibitory?
increase probability of neuron being closer to action potential. decrease probability of neuron firing
A neuron may receive inputs from both neurotransmitters at the same time T/F
T
What would be the lock and key in reference to the neurotransmitter and receptor
lock=receptor
key=neurotransmitter
what is the presynaptic neuron
The neuron that is sending neurotransmitters from the axon terminal
what is the post synaptic neuron
neuron that is receiving neurotransmitter that will bind on receptor
If GABA binds to a receptor this will cause the cell to experience what?
hyperpolarization (open chloride channels making overal charge more negative)
