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Histopathology > Week 7 Histophathology Nervous Tissue > Flashcards

Week 7 Histophathology Nervous Tissue Flashcards

1
Q

What is this an image of? What is pointed at by the green and blue arrow?

A

Cerebral Cortex

Green: glial cell

Blue: Pyramidal neuron

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2
Q

Identify the location of the two types of matter

A

This is the CNS

Gray matter: Outside

White matter: inside

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3
Q

What are some key points about the cerebellum?

A

Identifier is the Purkinje neuron

Highly convuluted

Grey matter has three layers (molecular, Purkinje, granular)

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4
Q

In the spinal cord, where are is the white/grey matter found?

A

White matter: exterior

Grey matter: interior

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5
Q

Identify the source of the slide. What is each arrow pointing at?

A

Cerebellum

Red: granular

Blue: Molecular

Green: Purkinje

Black: White matter

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6
Q

What is this a slide of? Where are the white/gray matter? Identify the portion of the meninges pointed at by each arrow.

A

The spinal cord.

Grey inside, White outside

Black: Dura mater

Blue: Arachnoid

Green: Pia mater

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7
Q

What is the easiest what to orient yourself when looking at a slide of the spinal chord?

A

Look at the horns of the grey mater. The dorsal hords will touch the edge while the ventral horns are rounded and don’t reach the edge.

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8
Q

What is the Nissl substance?

A

Abundant rough ER

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9
Q

What are ependymal cells and where are they found?

A

Low columnar epithelial cells found lining the central canal and ventricles of the brain

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10
Q

What are the largest and easiest spinal neurons to recognize? Where are they found?

A

Motoneurons

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11
Q

What is the large cell in the center? What cells are surrounding the outside? Where are they found?

A

pseudo-unipolar sensory neurons; satellite cells; Dorsal root ganglia

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12
Q

Sensory neurons in the DRG are the best example of what type of cell?

A

pseudounipolar neurons

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13
Q

What is responsible for the wagon wheel appearance of these cells? Where are they found?

A

Protein that was previously supporting myelin - peripheral nerve

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14
Q

What are the four types of glial cells?

A

Astrocytes, Schwann cells, Microglia, Oligodendrocytes (olgiodendroglia)

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15
Q

Which glial cells is responsible for inducing the BBB?

A

Astrocytes

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16
Q

What are the differences b/t oligiodendrocyts and schwann cells?

A

Oligodendrocytes: CNS, multiple myelin segment

Schwann: PNS, one myelin segment

17
Q

Name the type of tissue from left to right.

A

Peripherial nervous, Tendon, Smooth muscle

18
Q

What are the definine cells of the grey matter in the spinal cord?

A

Large multipolar nerve cells (Horn Cells)

19
Q

What is the role of ependymal cells?

A

These cells line the central canal of the spinal cord and ventricles of the brain and are ciliated in some cases to promote movement of CSF

20
Q

What does Nissl Substance help identify in the spinal cord?

A

Motor neurons

21
Q

What are the distinguishing features of the dorsal root ganglia?

A

Large round cell bodies with pseudounipolar sensory neurons that are surrounded by satellite cells or glia cells

22
Q

What are the three layers of covering in the peripherial nerve?

A

Epineurium, perineurium, and endoneurium

23
Q

What do schwann cells do?

A

These myelinate single neurons in the periphery

24
Q

What are the four parts of the meninges?

A

Dura Mater - Outer most

Arachnoid - thin layer above sub arachnoid

Subarachnoid space - contains the CSF

Pia mater - adheres to surface of spinal cord

25
Q

What is the role of microglia?

A

Macrophages of the brain these phagocytose material

26
Q

What is different about the oligodendrocyte and schwann cell in regards to their location?

A

The schawnn cell is located in the periphery and the oligodendrocyte is in the CNS

27
Q

What is this a picture of?

A

Astrocytes - note the star shape

28
Q

What is this a picture of?

A

Axonal Nerve -Transverse section

29
Q

What is this a picture of? What the little hand is on top of?

A

Endoneurium

30
Q

What is this a picture of?

A

This is a longitudinal section of a peripherial nerve

31
Q

What is this a picture of? Most specifically where the stain is not showing up? And what is this stain staining?

A

It is a peripherial nerve; what is not being stained is the Node of Ranvier and the stain is staining for Myelin

32
Q

What is the black arrow pointing at?

A

Perineurium

Histopathology (6 decks)

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