Central Nervous System Histology (Msq Drill 263)

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1. The schwann cell produces myelin in the PNS or CNS?
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Central Nervous System Histology (Msq Drill 263) - Quiz

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2. The principle and the functional cell of the nervous system is the
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3. Do astrocytes also form part of the blood brain barrier?

Explanation

Inotherwords they are involved in regulating the passage of materials from blood to CNS.

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4. The areas of the perikaryon that stain basic and are full of rER and free ribosomes are called
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5. _____________  transports molecules (nutrients, neurotransmitters) and organelles (mitochondria, neurofilaments) from cell body to distal end of axon.
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6.

Does this structure play any role in CSF production?

Explanation

yes, this is part of the choroid plexus.

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7. A schwann cell usually associates with how many axons?
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8. The following are all examples of ___________ ____________:  astrocytes, schwann cells, microglial cells, oligodendrocytes & capsular (satellite cells)

Explanation

These are the supporting cells of the nervous system.

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9. If the nerve cell body is damaged can the cell regenerate?

Explanation

It can regenerate if the damage is to the axon.

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10. What structure is normally filled with euchromatin?
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11. Do axons contain nissl bodies and golgi bodies?

Explanation

But they do contain mitochondria, microfilaments and microtubules.

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12. Is this cell type involved in the formation of myelin, or maintenance of myelin, or both in the CNS.?
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13. Do groupings of cell bodies called "nuclei" in the CNS have any anatomical conections?

Explanation

they are topographical

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14. What cell type lines the ventricles of the brain?

Explanation

Read explanation for question 24 for a full explanation.

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15. ___________ neurons are located in the retina, olfactory epithelium and form the ganglia of vestibulocochlear nerve 
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16. What is the most common type of neuron?
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17. Are the purkinje cells shown here the same purkinje cells that are found in the heart?
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18. Of the four neuroglial cells,  which cell type (shown below) is phagocytic and is of mesodermal origin?
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19.
What is layer no 4? For the correct sequence for all the layers please read the explanation for the answer that is included.

Explanation

1. Molecular layer 2. external granular layer 3.external pyramidal layer 4. internal granular layer 5. internal pyramidal layer 6. multiform layer

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20. Astrocyte processes terminate as "end feet" near blood vessels and at the _______ _________ of the CNS.
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21. Where would you find this structure?
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22. What is the metabolic center of the neuron?
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23. In the CNS, myelin, a lipoprotein is produced as an elaboration of:-
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24.
Is this taken from the cerebral cortex or cerebellar cortex?

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25. What is layer no 5?

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26. What is layer no 2?
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27. Are astrocytes involved in removing neurotransmitters from synaptic clefts?

Explanation

They are also involved in regulation of electrolyte balance in the CNS and for producing trophic factors necessary for neuronal survival.

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28. What are the two types of astroglial cells: Check the two that apply.
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29. Name the structure.

Explanation

The open medulla opens up into the 4th ventrincle. Note the sulcus limitans that separates the alar plate from the basal plate. The alar plate is the light area next to the opening and the basal plate is more medial and stains darker. The alar plate contains the nuclei.

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30. This is a cross section of the cerebral cortex. What is layer no 1?
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31.
This is the back part of which structure?


Explanation

the opening is the 4th ventricle.

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32. In the CNS, glial cells are divided into how many types?

Explanation

These include astroglia, microglia, oligodendrocytes and epindymal cells.

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33. Do dendrites also contain nissl bodies and mitochondria?

Explanation

Yes, they also contain microtubules and microfilaments.

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34. In the CNS oligondendrocytes send out many processes from the cell body, each of which is capable of myelinating how many segments of myelin around an axon?

Explanation

One oligodendrocyte forms myelin around a variable number of axons - up to 40 or 50.

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35. A tract is a group of axons. Do all these axons have to have the same origin, termination and course. Do they all have to transmit the same information?

Explanation

this is the definition of a tract.

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36. In the CNS and PNS what separates and aggregrates neurons?
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37. Are there any cell bodies in white matter?

Explanation

Your will find cell bodies of oligodendrocytes and astrocytes.

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38. These cells are involved in selectively isolating what areas between nerve cells?

Explanation

They also have supportive, reparative and nutritive roles.

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39. Epindymal cells (shown below) are derived from:-

Explanation

They form an epithelial sheet that covers the internal cavities such as the ventricular system of the brain and spinal cord.

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40. After CNS injury what cells are involved in scar formation?
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41. What is the principle cell found in sensory ganglia?

Explanation

This cell has one process that comes from the cell body that bifurcates forming a T-shape.

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42. Name the structure

Explanation

AKA the caudal medulla. The closed medualla has the spinal canal in the middle of it.

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43. Do epindymal cells produce CSF or are they responsible for reabsorption of CSF?

Explanation

The invaginated folds of epyndimal like epithelial cells are responsible for the production of CSF.

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44. A series of neurons designed to cary a specific type of information from one side to the other is known as a:

Explanation

Remember more than one neuron. This is different from a tract in which it was only one neuron.

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45. What is the opening in the middle of the last structure?
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46. Which of the following are central "gray regions" in which you will find functional groupings of cells bodies called "nuclei"? Check all that apply.
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47. White matter is arranged in tracts called:- (check all that apply.)
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48. What is the protective covering formed by astrocytes around the spinal cord and brain called? Check all that apply.
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The schwann cell produces myelin in the PNS or CNS?
The principle and the functional cell of the nervous system is the
Do astrocytes also form part of the blood brain barrier?
The areas of the perikaryon that stain basic and are full of rER and...
_____________  transports molecules (nutrients,...
Does this structure play any role in CSF production?
A schwann cell usually associates with how many axons?
The following are all examples of ___________ ____________: ...
If the nerve cell body is damaged can the cell regenerate?
What structure is normally filled with euchromatin?
Do axons contain nissl bodies and golgi bodies?
Is this cell type involved in the formation of myelin, or maintenance...
Do groupings of cell bodies called "nuclei" in the CNS have any...
What cell type lines the ventricles of the brain?
___________ neurons are located in the retina, olfactory epithelium...
What is the most common type of neuron?
Are the purkinje cells shown here the same purkinje cells that are...
Of the four neuroglial cells,  which cell type (shown below) is...
What is layer no 4? For the correct sequence for all the layers please...
Astrocyte processes terminate as "end feet" near blood vessels and at...
Where would you find this structure?
What is the metabolic center of the neuron?
In the CNS, myelin, a lipoprotein is produced as an elaboration of:-
Is this taken from the cerebral cortex or cerebellar cortex?
What is layer no 5?
What is layer no 2?
Are astrocytes involved in removing neurotransmitters from synaptic...
What are the two types of astroglial cells: Check the two that apply.
Name the structure.
This is a cross section of the cerebral cortex. What is layer no 1?
This is the back part of which structure?
In the CNS, glial cells are divided into how many types?
Do dendrites also contain nissl bodies and mitochondria?
In the CNS oligondendrocytes send out many processes from the cell...
A tract is a group of axons. Do all these axons have to have the same...
In the CNS and PNS what separates and aggregrates neurons?
Are there any cell bodies in white matter?
These cells are involved in selectively isolating what areas between...
Epindymal cells (shown below) are derived from:-
After CNS injury what cells are involved in scar formation?
What is the principle cell found in sensory ganglia?
Name the structure
Do epindymal cells produce CSF or are they responsible for...
A series of neurons designed to cary a specific type of information...
What is the opening in the middle of the last structure?
Which of the following are central "gray regions" in which you will...
White matter is arranged in tracts called:- (check all that apply.)
What is the protective covering formed by astrocytes around the spinal...
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