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Neurons and Action Potentials

Total questions: 20

Worksheet time: 39mins

Name
Class
Date
1.

What contains the nucleus of the neuron?

a)

Terminal Bouton

b)

Cell Body

c)

Axon Hillock

d)

Myelin Sheath

2.

This structure receives messages from the terminal bouton of a presynaptic neuron

a)

Axon

b)

Dendrite

c)

Cell Body

d)

Axon Hillock

3.

This structure emerges from the end branches of the axon and contain neurotransmitters

a)

Axon Collaterals

b)

first order neuron

c)

terminal bouton

d)

Nodes of Ranvier

4.

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

a)

Post Synaptic Neuron

b)

Axon Hillock

c)

Schwann Cells

d)

Oligodendrocyte

5.

The space between a presynaptic and post synaptic neuron

a)

Nodes of Ranvier

b)

Axon Hillock

c)

synaptic cleft

d)

terninal bouton

6.

These structures serve to transmit nerve signals to several parts of the nervous system simultaneously

a)

Terminal Bouton

b)

Nodes of Ranvier

c)

Neurotransmitter

d)

Axon Collaterals

7.

Schwann Cells create this in the PNS; Oligodendrocytes create this in the CNS

a)

Neurotransmitters

b)

Myelin Sheath

c)

the reuptake process

d)

Down Regulation

8.

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

a)

Neurotransmitter activity

b)

chemical enzymes

c)

receptors in the post synaptic neuron

d)

Soma

9.

When the neurotransmitter detaches from the post synaptic receptor, drifts out of the synaptic cleft, and is reabsorbed by glial cells, it is called

a)

Reuptake

b)

Diffusion

c)

Enzymatic Degradation

d)

Protein Degredation

10.

A decrease in the number of receptors on the post synaptic neuron that occurs in response to too much neurotransmitter is called

a)

Diffusion

b)

Enzymatic Degradation

c)

Perfusion

d)

Down Regulation

11.

The time required for the neurotransmitter to diffuse across a post synaptic neuron's membrane is called

a)

Synaptic Fatigue

b)

Electrical Potential

c)

Diffusion Delay

d)

Synaptic Delay

12.

These are chemical substances that breaks down a neurotransmitter so that the post synaptic neuron can depolarize in order to fire again

a)

Enzyme

b)

Protein

c)

Astrocyte

d)

Myelin

13.

This underlies the addiction process

a)

Synaptic Delay

b)

Synaptic Fatigue

c)

Post synaptic potentials

d)

pre synaptic potentials

14.

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

a)

Synaptic Fatigue

b)

Post Tetanic Potentiation

c)

Synaptic Delay

d)

Diffusion

15.

The average synaptic delay is how long?

a)

1-2 seconds

b)

1-2 microseconds

c)

1-2 milliseconds

16.

The flux of ions across the post synaptic membrane generates

a)

post synaptic potential

b)

post synaptic delay

c)

Synaptic fatigue

d)

Post tetanic Potentiation

17.

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

a)

Enzymes

b)

Chemical Receptors

c)

Neurotransmitters

d)

Proteins

18.

What is the brief electrical impulse that provides the basis for conduction of nerve signals along the axon?

a)

Post synaptic potential

b)

Membrane potential

c)

Action potential

d)

Resting potential

19.

This is the difference between the chemical composition inside and outside the cell

a)

Action Potential

b)

Membrane Potential

c)

Resting Potential

d)

post synaptic potential

20.

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

a)

Post synaptic Potentiation

b)

Synaptic Fatigue

c)

Depolarization

d)

Membrane Potential