Epithelial Flashcards

(37 cards)

1
Q

Cuboidal

A

Cube-shaped

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2
Q

Columnar

A

Column-like (oval shaped nuclei sit at bottom)

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3
Q

Transitional

A

Stretchy and variably shaped

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4
Q

Simple layer

A

Single layer all of the same type

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5
Q

Stratified layer

A

Serval layers, named by type of cell in outer layer

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6
Q

Epithelial

A
Outer layer 
Very top layer
form sheets of cells
Avascular - but had nerve endings
Can have cilia & microvilli
Replaced frequently (regenerative)
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7
Q

Simple squamous epithelium

A

Structure: single layer of thin; flattened cells
Function: suited for diffusion

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8
Q

Simple squamous epithelium

A

Location: lines inside of all blood vessels (endothelium)
Lines inside of heart (endocardium)
Lines walls of capillaries & responsible for feeding tissue and alveoli (air sacs of lungs)

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9
Q

Simple cuboidal epithelium

A

Structure: single layer of cube shaped cells with centrally located nuclei
Function: secretion and sometimes absorption

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10
Q

Simple cuboidal epithelium

A

Location: kidney tubules and ducts of some glands (salivary, thyroid, pancreas, and liver) and glands

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11
Q

Endocrine

A

Makes their product and secretes it into the matrix (fluid outside cell)

  • capillaries come inside the gland and pickup the product
  • product is always hormone
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12
Q

Exocrine

A

Secretes its products outdid of itself using s duct

Ex| saliva mucous sweat enzymes oil wax reproductive fluids and milk

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13
Q

Merocrine secretion

A

Cells release their product through exocytosis

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14
Q

Aprocrine secretion

A

The Alex of the cells become full of product, pinches off and moves into the duct and finally breaks down releasing product

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15
Q

Holocrine secretion

A

The whole cell becomes full of product and ruptures to release the product

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16
Q

Simple columnar epithelium

A

Structure: elongated cells, nuclei are all located near the basement membrane, often have microvilli or cilia
Function: tissue is a big absorber and cilia bell move things

17
Q

Simple columnar epithelium

A

Location: line uterus/ Fallopian tubes, stomach and intestines

18
Q

Psudostratufied columnar epithelium

A

Structure: looks like more than one layer but is not. Nuclei not all at bottom, have cilia, also have goblet cells

Function: sweeps debris out of lungs, goblet cells produce mucin histamine

19
Q

Keratin

A

Tough and waterproof protein that can be added to this layer.

Tissues that have this protein are called Keratinized

20
Q

Desquamification

A

Cells are dead they respond to friction by falling off. Takes friction swag from body

21
Q

Carcinoma

A

Any type of cancer to the epithelial tissue (skin cancer)

22
Q

Basal cell carcinoma

A

-looks like pimple that won’t go away

Usually cured

23
Q

Squamous cell carcinoma

A

-99% cure rate
Too much skin exposure
Cancer

24
Q

Malignant melanoma

A

Deadly cancer worst one

Genetic link

25
Stratified squamous epithelium
Structure: flattened layers of cells Function: wear and terse tissue Made up of logs of low energy friction exposure to the environment; protect from fluid loss and invasion
26
Stratford squamous epithelium
Location: makes up outer layer of skin and lines mouth throat vagina and anal canal
27
Method of looking for skin cancer
A- asymmetry B-boarder C-color D-diameter
28
Stratified cuboidal epithelium
Structure: two or three layers of cuboidal cells lining an open ring of larger glands (endocrine) Function: several layers of cells provide great protection than one single layer, secretors
29
Stratified cuboidal epithelium
Location: mammary glands, sweat glands, salivary glands, and pancreas
30
Stratified columnar epithelium
Structure: several layers of columnar cells Location: not located in very many places in he body Vas deferens (male reproductive) and parts of the pharynx, distal esophagus and cardiac sphincter
31
Transitional epithelium
Distend and return to its normal size, as in lining of urinary bladder
32
Cutaneous
Epithelium membrane Tarp over boat
33
Mucous
Epithelial membrane Lines opening to outside (digestive tract, respiratory, ruminating, reproductive) Contain specialized cells that produce mucous
34
Serous
Epithelial membrane 2 layered membrane w/ potential space in between
35
Parietal
Lines walls of cavities Reduces friction between tissues and organs
36
Visceral
Wraps around organs Reduces friction between tissues and and organs
37
Squamous
Flat (squashed)