The Neuron and The Nervous System - quiz

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Question 1 of 19

Click on each orange point and select the correct answer.

Correctly label the neuron.

Explanation

Question 2 of 19

Click on each orange point and select the correct answer.

A Synapse is a junction between two nerve cells, consisting of a minute gap across which impulses pass by diffusion of a neurotransmitter.

Explanation

Question 3 of 19

Excitatory neurotransmitters:

Select one of the following:

depolarise the membrane
hyperpolarise the membrane

Explanation

Question 4 of 19

inhibitory neurotransmitters:

Select one of the following:

hyperpolarise the membrane
depolarise the membrane

Explanation

Question 5 of 19

What type of Neuron is this?

Select one of the following:

Unipolar
Multipolar
Bipolar
Anaxonic

Explanation

Question 6 of 19

What kind of Neuron is this?

Select one of the following:

anaxonic
unipolar
bipolar
multipolar

Explanation

Question 7 of 19

What type of Neuron is this?

Select one of the following:

multipolar
bipolar
unipolar
anaxonic

Explanation

Question 8 of 19

What type of Neruon is this?

Select one of the following:

bipolar
unipolar
anaxonic
multipolar

Explanation

Question 9 of 19

This is an Ependymal Cell. It is found in the Central Nervous System. What does it do?

Select one of the following:

Line the central cancel and ventricles where they form an epithelium known as ependyma, and monitor Cerebrospinal Fluid.
Myelinate the CNS axons and provide structural framework.
Perform phagocytosis to remove cell debris from the CNS.
Myelinate PNS axons and participate in repair after injury.

Explanation

Question 10 of 19

This is an Astrocyte. It is found in the Central Nervous System. Which describes the function of this particular neuroglia?

Select one of the following:

Maintain the blood brain barrier, provide structural support by creating a three-dimensional framework for the CNS through their microfilaments. Repair damaged neural tissue and control the interstitial environment by regulating ion and nutrient concentrations.
Myelinate axons in the CNS.
Myelinate axons in the PNS.
Produce epithelium called ependyma, circulate and produce Cerebrospinal Fluid.

Explanation

Question 11 of 19

This neuroglia is an ogliodendrocyte. It is found in the Central Nervous System. Which best describes it's function in the CNS?

Select one of the following:

Myelinate axons by forming a myelin sheath along the length of each axon.
Provide the blood-brain barrier.
Form Cerebral Spinal Fluid and manage the concentration of ions and nutrients.
Remove myelin from axons and perform phagocytosis within the interstitial fluid, removing pathogens and dead or damaged neurons for recycling.

Explanation

Question 12 of 19

This is microglia, the smallest of the neuroglia. It is found in the Central Nervous System. It has a very important role. What is it?

Select one of the following:

Perform phagocytosis to remove pathogen, cell debris and waste.
Myelinate the axons of the neurons in the central nervous system.
Myelinate the axons of the neurons in the peripheral nervous system.
Remove the myelin form axons and release neurotransmitters to make skeletal muscle contract.

Explanation

Question 13 of 19

This is a satellite cell, abundant in the Peripheral Nervous System. Which statement describes their function?

Select one of the following:

Satellite cells surround the neuron cell bodies in ganglia. They regulate the environment around the neurons of the PNS
Satellite cells produce myelin for the axons of the neurons in the PNS.

Explanation

Question 14 of 19

This is a Schwann Cell. It is found in the Peripheral Nervous System. What is it's function?

Select one of the following:

Non-myelinating Schwann cells surround the axons in the PNS, while myelinating Schwann Cells are responsible for the myelination of the peripheral axons and participate in repair process after injury.
Remove debris from the interstitial fluid via phagocytosis.

Explanation

Question 15 of 19

Click on each orange point and select the correct answer.

The Organisation of the Nervous System

Explanation

Question 16 of 19

Click on each orange point and select the correct answer.

Synapse

Explanation

Question 17 of 19

Click on each orange point and select the correct answer.

Graded Membrane Potential

Explanation

Question 18 of 19

Click on each orange point and select the correct answer.

Select the correct name for the channels below:

Explanation

Question 19 of 19

Select from the dropdown lists to complete the text.

Generation of Action Potentials.

Step 1: Depolarisation of the threshold.
* The stimulus that initiates an action potential is a ( graded depolarisation, graded repolarisation ) large enough to open the channels.
* A graded depolarisation brings an ( area of excitable membrane, the entire cell membrane ) to threshold ( (-60mV), (-90mV) )

Step 2: Activation of Sodium Channels and Rapid Depolarisation.
* The ( Voltage-Gated, mechanically-gated ) sodium channels open (sodium channel activation)
* Sodium Ions, driven by ( electrical attraction, diffusion ) and the chemical gradient, flood into the cell
* The transmembrane potential goes from -60mV (the threshold level) to ( +30mV, -90mV ) (the sodium equilibrium potential)
* The membrane cannot respond to any other stimulation during this time, the ( Refectory Period, Refractory Period )

Step 3: Inactivation of Sodium Channels and Activation of Potassium Channels.
* The Voltage-Gated sodium channels ( close, remain open ) (sodium channel inactivation occurs) at +30mV
* The ( Voltage-Gated, chemically gated ) potassium channels are now open, and positively charged potassium ions ( diffuse out, are actively transported into ) of the cell, shifting the membrane potential back toward ( resting levels, +60mV ).
* ( Repolarisation, Hyperpolarisation ) begins.

Step 4: Closing of Potassium Channels
* The Voltage-Gated sodium channels regain their normal properties
* The membrane is now capable of generating another action potential if a larger-than-normal stimulus is provided
* The Voltage-Gated potassium channels begin closing at ( -70mV, +30mV ). Because they do not all close at the same time, potassium loss continues and a ( temporary hyperpolarisation, ongoing hypopolarisation ) occurs, bringing the membrane to approximately ( -90mV, +30mV ).
* At the end of the relative Refractory Period, all Voltage-Gated channels have closed and the membrane is back to it's resting state.

Explanation

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	Created by Amelia Claire over 10 years ago

the nervous system

The Neuron and The Nervous System - quiz

Question 1 of 19

Click on each orange point and select the correct answer.

Correctly label the neuron.

Explanation

Question 2 of 19

Click on each orange point and select the correct answer.

A Synapse is a junction between two nerve cells, consisting of a minute gap across which impulses pass by diffusion of a neurotransmitter.

Explanation

Question 3 of 19

Excitatory neurotransmitters:

Select one of the following:

Explanation

Question 4 of 19

inhibitory neurotransmitters:

Select one of the following:

Explanation

Question 5 of 19

What type of Neuron is this?

Select one of the following:

Explanation

Question 6 of 19

What kind of Neuron is this?

Select one of the following:

Explanation

Question 7 of 19

What type of Neuron is this?

Select one of the following:

Explanation

Question 8 of 19

What type of Neruon is this?

Select one of the following:

Explanation

Question 9 of 19

This is an Ependymal Cell. It is found in the Central Nervous System. What does it do?

Select one of the following:

Explanation

Question 10 of 19

This is an Astrocyte. It is found in the Central Nervous System. Which describes the function of this particular neuroglia?

Select one of the following:

Explanation

Question 11 of 19

This neuroglia is an ogliodendrocyte. It is found in the Central Nervous System. Which best describes it's function in the CNS?

Select one of the following:

Explanation

Question 12 of 19

This is microglia, the smallest of the neuroglia. It is found in the Central Nervous System. It has a very important role. What is it?

Select one of the following:

Explanation

Question 13 of 19

This is a satellite cell, abundant in the Peripheral Nervous System. Which statement describes their function?

Select one of the following:

Explanation

Question 14 of 19

This is a Schwann Cell. It is found in the Peripheral Nervous System. What is it's function?

Select one of the following:

Explanation

Question 15 of 19

Click on each orange point and select the correct answer.

The Organisation of the Nervous System

Explanation

Question 16 of 19

Click on each orange point and select the correct answer.

Synapse

Explanation

Question 17 of 19

Click on each orange point and select the correct answer.

Graded Membrane Potential

Explanation

Question 18 of 19

Click on each orange point and select the correct answer.

Select the correct name for the channels below:

Explanation

Question 19 of 19

Select from the dropdown lists to complete the text.

Explanation