NEU 409 Exam 1 Kahoot Flashcards
afferent signals carry BLANK Info; efferent signals carry BLANK Info
Sensory
Motor
During which period/phase would it take a larger than normal stimulus to trigger an action potential?
Relative refactory period
what primary purpose do dendrites serve?
To receive neural signals
Neurons function to communicate in the nervous system where as glial cells support nervous system function
true or false
true
The two driving forces of ion movement across the membrane of a neuron when at resting potential
concentration and voltage gradient
Ion BLANK require additional energy ATP to operate but Ion BLANK do not
pumps
channels
If neural integration is analagous to American goverment which of the following does the preseident represent?
Axon Hillock
The chemical phase of neural communication Involves NT
true or false
True
when a neuron is at resting potential it has a greater positive charge inside the neuron than outside
true or false
false
which of the following glial cells produce myelin in the CNS
Oligodendrocytes
Which phase in which K moves out of the neuron is called what?
repolarization
Myelin is located on the BLANCK and helps to improve BLANCK
axon
efficeincy of communication
A change in a neurons potential causing it to change from negative to positive and back to negative again
AP
Which is not a type of neuron?
Multipolar Bipolar Astrocyte Unipolar
Astrocyte - star shape of glial cells
A space where NT communicate signals between neurons
Synapse
The phase when Na quickly floods into neuron?
depo
The phase when inside of the neuron becomes more negative than resting potential
hypo
The four principal ions relevant for signaling
Na, Cl, K, Ca
which ion causes synaptic vesicles to move toward the end of the axon and release NT into the synapse
Ca
VG Channels allow any Ion to pass through when open
true or false
false
What are the three types of gating mechanisms for ion channels?
Ligand
VG
Mechanical
the electrical phase of neural communication involves changes in voltage gradients
true or false
true
If excitatory signals accumulate and voltage inside of a neuron reaches threshold what will happen?
AP will propogate down the axon of the neuron
which nervous system cells are responsible for communication within the nervous system?
Neuron
which nervous system cells are responsible for producing myelin in the CNS?
Oligodendroglia
Dendrites receive signals, and axons send signals
true or false
true
Astrocytes are found in the CNS and satellite cells are found in the PNS
true or false
true
what is rapid change in memebrane polarity causing a signal to move or propogate down the axon?
Depo
which term refers to where neurons connect with each other?
synapse
what term is associated with the fact that neurons either fire or do not fire?
all or none princple
which term means toward midline or the middle of the body?
medial
what part of the nervous system includes cranial and spinal nerves?
peripheral
which term means same side?
ipsilateral
what part of the nervous system includes brain and spinal cord?
central
which body section cuts the body down into top and bottom portions?
transverse
which term means towards the back?
posterior
which nervous system cells make myelin in PNS?
Schawann
which term means opposite sided?
contralateral
function of dendrites?
to recive electrochemical signals from other neurons
