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Histology Lecture > Histology Lecture (Epithelial Cells) part 2 > Flashcards

Histology Lecture (Epithelial Cells) part 2 Flashcards

1
Q

4 types of specialized cell surfaces.

A
  1. Microvilli
  2. Stereocilia
  3. Cilia
  4. Flagella
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2
Q

2 Types of shape of Microvilli.

A
  1. Brushed
  2. Striated
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3
Q

Microvilli: Striated - where can it be found?

A

Gastro Intestinal Tract (GIT)

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4
Q

Microvilli: Brushed- where can it be found?

A

Proximal Convulated Tubules, Kidney

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5
Q

Short or long fingerlike extensions or folds.

A

Microvilli

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6
Q

Vertical striations seen in refractile border of columnar epithelium.

A

Microvilli

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7
Q

Microvilli’s brush borders serves us?

A

Serve as adaptation to enhance
the surface area of membrane exposed to
substances to be absorbed

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8
Q

Longer than microvilli.

A

Stereocilia

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9
Q

Motor detecting

A

Stereocilia

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10
Q

Long non-motile processes of cells projecting in the lumen from each cell in the epithelium of epididymis.

A

Stereocilia

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11
Q

Like hair of a water color brush

A

Stereocilia

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12
Q

Longer branched microvilli

A

Stereocilia

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13
Q

Its function is not well established but in the epithelium, it is absorptive.

A

Stereocilia

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14
Q

Assumed that it promotes its function by
amplifying the cell surface

A

Stereocilia

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15
Q

Where can stereocilia can be found?

A
  • Inner ear
  • Epididymis
  • Male reproductive tract
  • Part of ductus deferens
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16
Q

Numerous motile processes larger than
microvilli.

A

Cilia

17
Q

Arranged in parallel rows projecting from surfaces of some epithelial cells.

A

Cilia

18
Q

At the base of cilia is dense elongated granule called?

A

Basal Body

19
Q

Moves in waves and sweep over epithelium.

A

Cilia

20
Q

Surfaces serve to propel fluid or coating of mucus towards the exterior.

A

Cilia

21
Q

Elongated motile structure on surface of epithelial cells, longer than cilia.

A

Flagella

22
Q

How does flagella differ from cilia?

A

They differ in movements and the number of cells.

23
Q

What is the largest flagella?

A

Mammalian Spermatozoa

24
Q

Where can flagella be found?

A
  • Epithelia of Nephrons
  • Testes
  • Ducts of glands
25
Q

Varied in shape, from high columnar to
cuboidal to low squamous cells including all intermediate forms.

A

Epithelial Cells

26
Q

What is the form of epithelial cells? Why is it like that?

A
  • Polyhedral form
  • This is due to their position in cellular layers
27
Q

What is the shape of the nuclei of epithelial cells.

A
  • spherical or elongated.
  • They correspond to the shape of the cell.
28
Q

In cuboidal cell, what is the shape of the nuclei?

A

spherical

29
Q

In squamous cell, what is the shape of the nuclei?

A

flat

29
Q

Long axis of the nucleus is always __________ to the main axis of the cell.

A

parallel

30
Q

Classification of Epithelial Tissue in accordance to complexity or number of layers.

A
  1. simple
  2. stratified
  3. pseudostratified
  4. transitional
31
Q

Classification of Epithelial Tissue in accordance to shape

A
  1. squamous
  2. cuboidal
  3. columnar
32
Q

Types of simple epithelial cells

A
  1. simple squamous epithelium
  2. simple cuboidal epithelium
  3. simple columnar ciliated epithelium
  4. simple columnar non-ciliated epithelium
  5. pseudostratified columnar ciliated epithelium
  6. pseudostratified columnar stereociliated epithelium
33
Q

Types of stratified epithelial cells

A
  1. stratified squamous keratinized epithelium
  2. stratified squamous non-keratinized epithelium
  3. stratified cuboidal epithelium
  4. stratified columnar epithelium
  5. transitional epithelium
  6. glandular or pyramidal epithelium

Histology Lecture (4 decks)

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