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MSK-TNT > Epithelial Tissue > Flashcards

Epithelial Tissue Flashcards

1
Q

Describe tight junctions

A

impermeable; acts as a barrier on the apical surface of the cell; decreases permeability occludins and claudins

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2
Q

Describe gap junctions

A

communicating junctions fluid filled and connect the cells in order to communicate connexin aggregates

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3
Q

What are the 3 types of anchoring junctions?

A
  1. adherens 2. Desmosomes 3. Hemidesmosomes
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4
Q

Describe adherens

A

lateral adhesions: cadherins+actin

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5
Q

Describe desmosomes

A

lateral adhesions; cadherins+ intermediate filaments

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6
Q

Describe hemidesmosomes

A

basal adhesions: integrins and intermediate filaments that anchor to the basal lamina

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7
Q

What is the clinical relevance off tight junctions?

A

Bacteria that causes food poisoning target the tight junctions that are present in the GI tract and decreases the fluid flow into the intestines helicopter pylori: causes gastric ulcers and binds to the TJs in the stomach

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8
Q

Describe pemphigus vulgaris

A

Autoimmune disease in which there is an abnormal desmosome function decreases cell to cell adhesion and blisters of the oral mucosa

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9
Q

Describe the basement membrane

A

Adjacent to the basal domain selective barrier

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10
Q

What is surrounding the cell (dark magenta)

A

The basement membrane

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11
Q

What are the three types of apical specializations of a cell?

A

Microvilli, stereocilia, and Cilia

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12
Q

Describe microvilli

A

Cytoplasmic

Have an actin core

Absorption

Increase the surface area of the cell for increased absorption

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13
Q

Describe stereocilia

A

Long microvilli, less mobile

actin core

increased surface area

ARE restricted to epididymis and hair cells of the inner ear

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14
Q

Describe cilia

A

Long and highly motile

beat in a wave like fashion to propel substances

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15
Q

Where is simple squamous located? What is the function?

A

Location: line blood vessels, serous membranes, alveoli, and loopof Henle in the kidney

Function: exchange, barrer, lubrication

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16
Q

Describe simple cuboidal

  1. Location
  2. Function
A
  1. Location: kidney, tubules, glands, and associated ducts, terminal branches, and covering of the ovary
  2. Function: absorption, barrier, secretion
17
Q

Describe simple columnar

  1. Location
  2. Function
A
  1. Location: auditory tubes, uterus, oviducts, stomach, GI, gallbladder
  2. Function: absorption and secretion
18
Q

Describe pseudostratified columnar ciliated

  1. Location
  2. Function
A
  1. Location: lining of the nasal caity, pharynx, trachea, bronchi
  2. Function: absorption and secretion, debris and particle movement
19
Q

Describe urothelium

  1. Location
  2. Function
A
  1. Location: urinary bladder, uterus, urethra
  2. Function: barrier, distensible property
20
Q

Describe nonkeratinized stratified squamous

  1. Location
  2. Function
A
  1. Location: oral cavity, portions of the pharynx, esophagus, anus, vagina, and cornea

Function: barrier and protection

21
Q

Describe keratinized stratified squamous

  1. Location
  2. Function
A
  1. Location: epidermis
  2. barrier and protection
22
Q

Describe stratified cuboidal

  1. Location
  2. Function
A
  1. Location: sweat glands and ducts, ovarian follicles, salivary glands
  2. Function: barrier and passageway
23
Q

Describe a serous membrane

A

epithelial tissue that lines the internal body cavities

forms a smooth transparent, two layered membrane that is lubricated by serum

mesothelium: simple squamous that comprises a part of the serous membrane

24
Q

Describe compound glands and differentiate between

  1. compound tubular
  2. compound acinar
  3. compound tubuloacinar
25
Q

What is labeled as E? (the blue guys)

A

simple squamous cells

26
Q

What is labeled as BM? What cells are shown next to it?

A

Basement membrane

Simple cuboidal

27
Q

What cells are pictured?

A

Simple columnar

28
Q

What cells are pictured?

A

psuedostratified columnar ciliated

29
Q

What cells are pictured?

A

Simple columnar

30
Q

What cells are pictured?

A

Pseudostratified columnar ciliated

31
Q

What cells are pictured?

A

Urothelium

32
Q

What cells are pictured?

A

Nonkeratinized stratified squamous

33
Q

What cells are pictured?

A

Keratinized stratified squamous

34
Q

What cells are pictured?

A

Stratified cuboidal

35
Q

What is pictured?

A

serous acini

36
Q

What is pictured?

A

Mucous acini

37
Q

What is pictured?

A

Mucoserous acini

38
Q

What is pictured? what are the dots pointing to?

A

parotid gland, serous acini

39
Q

What gland is pictured?

A

sublingual

MSK-TNT (3 decks)

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