WorksheetsNeurons and Action Potentials
Total questions: 20
Worksheet time: 39mins
What contains the nucleus of the neuron?
Terminal Bouton
Cell Body
Axon Hillock
Myelin Sheath
This structure receives messages from the terminal bouton of a presynaptic neuron
Axon
Dendrite
Cell Body
Axon Hillock
This structure emerges from the end branches of the axon and contain neurotransmitters
Axon Collaterals
first order neuron
terminal bouton
Nodes of Ranvier
This structure receives the presynaptic neuron neurotransmitter substance from the synaptic cleft but only if the neurotransmitter possesses the specific molecules that can bind to its receptor sites
Post Synaptic Neuron
Axon Hillock
Schwann Cells
Oligodendrocyte
The space between a presynaptic and post synaptic neuron
Nodes of Ranvier
Axon Hillock
synaptic cleft
terninal bouton
These structures serve to transmit nerve signals to several parts of the nervous system simultaneously
Terminal Bouton
Nodes of Ranvier
Neurotransmitter
Axon Collaterals
Schwann Cells create this in the PNS; Oligodendrocytes create this in the CNS
Neurotransmitters
Myelin Sheath
the reuptake process
Down Regulation
This must be broken down or removed after reaching the postsynaptic cell to prevent continued signal conduction and allow further cycles of release and signalling
Neurotransmitter activity
chemical enzymes
receptors in the post synaptic neuron
Soma
When the neurotransmitter detaches from the post synaptic receptor, drifts out of the synaptic cleft, and is reabsorbed by glial cells, it is called
Reuptake
Diffusion
Enzymatic Degradation
Protein Degredation
A decrease in the number of receptors on the post synaptic neuron that occurs in response to too much neurotransmitter is called
Diffusion
Enzymatic Degradation
Perfusion
Down Regulation
The time required for the neurotransmitter to diffuse across a post synaptic neuron's membrane is called
Synaptic Fatigue
Electrical Potential
Diffusion Delay
Synaptic Delay
These are chemical substances that breaks down a neurotransmitter so that the post synaptic neuron can depolarize in order to fire again
Enzyme
Protein
Astrocyte
Myelin
This underlies the addiction process
Synaptic Delay
Synaptic Fatigue
Post synaptic potentials
pre synaptic potentials
This occurs when the post synaptic neuron has prolonged and repetitive discharge after firing due to too much neurotransmitter release or too slow enzymatic degradation
Synaptic Fatigue
Post Tetanic Potentiation
Synaptic Delay
Diffusion
The average synaptic delay is how long?
1-2 seconds
1-2 microseconds
1-2 milliseconds
The flux of ions across the post synaptic membrane generates
post synaptic potential
post synaptic delay
Synaptic fatigue
Post tetanic Potentiation
When this binds to a receptor site on a post synaptic membrane, the result may either be depolarization or hyperpolarization of the post synaptic membrane
Enzymes
Chemical Receptors
Neurotransmitters
Proteins
What is the brief electrical impulse that provides the basis for conduction of nerve signals along the axon?
Post synaptic potential
Membrane potential
Action potential
Resting potential
This is the difference between the chemical composition inside and outside the cell
Action Potential
Membrane Potential
Resting Potential
post synaptic potential
This occurs when the post synaptic neuron has prolonged and repetitive discharge after firing due to too much neurotransmitter release or too slow enzymatic degradation
Post synaptic Potentiation
Synaptic Fatigue
Depolarization
Membrane Potential
