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Fundamentals of Cellular Medicine > Histology - Neural Tissue > Flashcards

Histology - Neural Tissue Flashcards

1
Q

Identify the Green and Red Arrows

A

Green Arrow = Nerve Endings

Red Arrow = Spinal Ganglia

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2
Q

What are glial Cells?

A

Support cells that are found throughout the nervous system

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3
Q

Identify the purple and orange arrows

A

Purple Arrows = Axons and Long Dendrites

Orange Arrows = Neuronal Cell Bodies

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4
Q

What are the two major regions of the spinal

cord?

A

Gray Matter = Neuronal Cell Bodies

White Matter = Axons and long dendrites

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5
Q

What are multipolar neurons?

A

Neurons with an axon and several dendrites

e.g. Motor Neurons of the peripheral nervous system

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6
Q

Identify the structures indicated by the arrows

A

Neuronal Cell Bodies

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7
Q

Identify the structures indicated by the green and red arrows.

A

Green Arrows = Multipolar Motorneuron Cell Bodies

Red Arrows = Oligodendrocytes, Non-Neuronal Cells (Smaller round nuclei)

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8
Q

Identify the structures indicated by the green, black, yellow, and red arrows

Also Identify Nissl Bodies

A

Green Arrows = Dendrites

Black Arrow = Delimitation of the Nucleus

Yellow Arrow = Nucleolus of a Nueron (abdunant euchromatin)

Red Arrows = Glial Cells

Nissl Bodies are the puple flaky weblike parts which also

comprise dendrites

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9
Q

What is a perikaryon?

A

Cytoplasm of neuronal cell body

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10
Q

What are Nissl substances/Nissl bodies

A

Clusters of rough endoplasmic reticulum in the cytoplasm of neurons.

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11
Q

Identify the structures indicated by the arrows and the outlined regions

A

Arrow = Axon

Outlined Region = Hillux of the Axon

Important = Axons Lack Nissl Substance (Dendrites

contain Nissl Substance)

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12
Q

What does this image depict?

Identify Structures A through D

A

Cell body of a motor neuron

A = Nissl Substance

B = Euchromatic Nucleus

C = Nucleolus

D = Capillary

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13
Q

Identify structures indicated by A and B

A

A = Mitochondria

B = Nissl Bodies

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14
Q

Identify the Areas indicated by the blue box

A

White matter of the spinal cord (oriented cranial caudally) contains mylenated axons and some dendrites and is sending information up and down the spinal cord.

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15
Q

What time of staining was used?

Identify the structure indicated by the yellow arrow and the pale region surrounding the structure indicated by the yellow arrow.

A

Section was labeled with a silver stain

Yellow Arrow = Axon

Pale Region = Myelin

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16
Q

Identify the structures indicated by/between the yellow arrows.

A

Myelin

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17
Q

Identify the outlined regions

A

Outlined Regions = Locations where nerves can be found

Important = Neuronal Cell Bodies are NOT found in nerves

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18
Q

Enseathment

A

During embryogenesis schwann cells initially surround several axons with their cytoplasm and plasma membrane

Smaller caliber axons remain enseathed

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19
Q

What happens to large axons after embryogenesis?

A

Schwann cell selects a single axon to support and wraps its cytoplasm and plasma membrane around the axon several times. When the cytoplasm is squeezed out the remaining layer of shcwann cell membrane is called myelin

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20
Q

Myelin

A

A region of axon that is wrapped with several Schwann cells

A single axon is myelinated by several schwann cells

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21
Q

Nodes of Ranvier

A

Regions of bare axon not surrounded by myelin

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22
Q

Identify the structures indicated by the letter A and the purple, red, and green arrows and the areas outlined in blue.

A

A = Schwann Cell Cytoplasm

Red Arrows = Gaps in the Schwann Cells which show they wrap around axons

Purple Arrows = Schwann cell plasma membrane and it’s external Lamina

Green Arrows = Two plasma membrans of axon and schwann cell

Blue Outline = Collagen (Reticular) Fibers

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23
Q

Identify the structures indicated by the arrows

A

Blue Arrow = External Lamina

Purple Arrow = Many membrane layers of a single Schwann Cell

Yellow Arrow = Axonal Membrane

Red Arrow = Microtubules

Green Arrow = Neurofilaments (Intermediate Filaments)

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24
Q

Identify the stain used and the structure indicated by the arrow.

A

Osmium tetroxide which labels myelin membrane

Arrow indicates nodes of ranvier

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25
Q

Identify the view in the top portion of the image as

compared to the bottom portion.

Identify the structures indicated by the blue arrow as compared to the green arrows

A

Top portion is cross-sectional view of the axon

Bottom portion = longitudinal view of the axon

Green Arrow = Axon

Blue Arrow = Edge of Myelin

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26
Q

Identify the structures indicated by the blue outlines

A

Rodes of Ranvier

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27
Q

Identify the structure outlined in green

Identify the structures indicated by the black arrows

A

Peripheral Nerves (Numerous Nuclei and Wavy appearance and Elasticity)

Perineurium

28
Q

Endoneurium

A

A loose connective tissue between axons

29
Q

Perineurium

A

A cellular layer that bundles many axons into structures called fasicles

Has some characteristic features of epithelium including occluden junctions

30
Q

Epineurium

A

A dense connective tissue often conatining adipose that bundles fasicles together

31
Q

Identify the Black Arrows, Green Brackets, Middle Region

A

Middle Region = Endoneurium

Black Arrows = Perineurium

Green Arrows = Epineurium

32
Q

Identify the green and black arrows

A

Green Arrows = Endoneurium

Black Arrows = Perineurium

Upper Right/Left corners = Epineruium

33
Q

Identify Black Arrows, Green outline, and location of the endoneurium

A

Green Outline = Peripheral Nerve

Black Arrow = Perineurium

Endoneurium is area within the outlined region

34
Q

What comprises ganglia?

A

They consist of clusters of cell bodies, together with supporting cells that are contained within a connective tissue capsule

35
Q

Identify the structures indicated by the black arrows and the blue arrows.

A

Black Arrows = Neuronal Cell Bodies

Blue Arrows = Connective tissue capsule

36
Q

Identify the structures indicated by the black, green, and blue arrows.

A

Black Arrows = Mark edge of one nucleus

Blue Arrows = Prominent Nucleolus

Green Arrows = Satellite Cells

37
Q

Identify the structures indicated by the black, green, and blue arrows.

A

Black Arrow = Nuclear Membrane

Blue Arrow = Nucleolus

Green Arrow = Satellite Cells

38
Q

Identify the structures indicated by the black, green, and blue arrows.

A

Black Arrow = Nuclear Membrane

Blue Arrow = Nucleolus

Green Arrow = Satellite Cells

39
Q

Identify the structure indicated between the two green arrows

A

Parasympathetic ganglium

The perineurium is at the tips of the arrows.

40
Q

Identify the indicated structures

What characteristic of this neuron reflect its high synthetic activity?

A

A = Dendrite

B = Axon

Abundant nissl substance and euchoromatic chromatin

41
Q

Identify the outlined region

A

Epineurium

42
Q

Identify the structure on this slide

43
Q

Identify the structure on this slide

A

Unilocular Adipose Tissue

44
Q

Identify the structure indicated by the arrows.

A

Perineurium

45
Q

Identify the structures indicated by the letters and between arrow heads

A

A = Schwann Cells or Maybe Fibroblasts

B = Node of Ranvier

C = Axon

Between Arrow heads = Myelin Membrane

46
Q

Identify structures indicated by A through D

A

A. Schwann Cell Nucleus

B. Schwann Cell Cytoplasm

C. Myelinated Axon

D. Unmyelinated Axon

47
Q

Identify the structures indicated by the arrows

A

Non-Keratinized Stratified Squamous

48
Q

Identify the structures indicated by the red, orange, green arrows

A

Red Arrows = Nucleolus

Orange Arrow = Glial Cell Nucleus

Green Arrow = Nissl Substance

49
Q

Identifty the structures indicated by the arrows

A

Orange arrows = Nodes of Ranvier

Red Arrow = Broken Nerve

50
Q

Identify the structure outlined in green

A

Peripheral Nerve

51
Q

Identify the Structures indicated by the arrows

A

Yellow Arrow = Axon

Blue Arrow = Myelin

52
Q

Identify the area outlined in yellow

A

Yellow Outline = Ganglion

Red Arrow = Neuron

53
Q

Identify the structures indicated by the red and yellow X’s

A

Red X = Axon

Yellow X = Schwann Cell

54
Q

Identify the structures indicated by the arrows

A

Red Arrow = Satellite Cells

Orange Arrows = Nuclear Membrane

Black Arrow = Axon or Dendrite

55
Q

Identify structures indicated by the arrows.

A

Blue Arrow = Nucleus

Pink Arrow = Dendrite or Axon (Can’t discern)

Blue Arrow = Either Axon or dendrite

56
Q

Identify the outlined region

57
Q

Identify structures indicated by the arrows/outline

58
Q

Identify the structures form numbers 1-7

A
  1. Nucleus of Schwann cell
  2. Schwann cell cytoplasm
  3. (cytoplasm of another Schwann cell)
  4. Golgi
  5. Axons or dendrites
  6. External lamina
  7. Collagen
59
Q

Identify the structures indicated by the arrows/outlines

A

Yellow Arrow = Schwann Cells

Green Arrow = Ganglion

Orange Arrow = Neuron

60
Q

Identify the structures indicated by the arrows/outlines

A

Red Arrow = Axon

Black Arrow = Axon

Green Arrow = Perineurium

Red Outline = Epineurium

Blue Outline = Endoneurium

61
Q

Identify the structures indicated by the arrows/outlines

A

Green Outline = Peripheral Nerve

Red Arrow = Most likely Schwann Cell Nuclei

Black Arrow = Perineurium

62
Q

Identify the structures indicated by the outline

A

Multilocular Adipose Tissue

63
Q

Identify the structures indicated by the arrows

A

Yellow Arrow = Axon

Brown Arrow = Myelin

64
Q

Identify the structures indicated by the outlines

A

Black Outline = Peripheral Nerve

Yellow Outline = Dense Irregular Connective Tissue

65
Q

Identify Tissue Section

66
Q

Identify the structures indicated by the arrows/outlines

A

Black Arrow = Neuron

Red Outline = Ganglion

Green Outline = Loose Connective Tissue

Green Arrows = Most Likely Schwann Cells

Fundamentals of Cellular Medicine (7 decks)

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