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Histology > epithelium (fist part- types of epithelium) online module W2 > Flashcards

epithelium (fist part- types of epithelium) online module W2 Flashcards

1
Q

what is a tissue

A

a group of cells that are similar in structure and function

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2
Q

what are the four types of tissue present in humans

A

epithelial
connective
muscle
nervous

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3
Q

two ways in which cells form tissues

A

ECM

cell junctions

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4
Q

are epithelial tissues very cellular?

A

yes

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5
Q

what is the basement membrane made out of

A

blasal lamina, reticular lamina

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6
Q

what is the name of the top surface of an epithelial cel

A

apical surface

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7
Q

what is the name of the side surface of an epithelial cell

A

lteral surface

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8
Q

what in the name of the bottom side of an epithelial cell

A

basal surface

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9
Q

what are the four characteristics of epithelial tissue

A

supported - sitting on connective tissue
avascular - no blood vessels
regenerative - undergoes mitosis
cell membrane specializations

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10
Q

what are the apical, lateral and basal specialisations of epithelial tissue

A

apical - microvilli cilia sereocilia
lateral - cell junctions
basal - cell junctions and basal lamina

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11
Q

two ways that epithelial cells may be classified

A

by shape of cells on surface

by number of cell layers

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12
Q

classification of epithelial tissue - number of layers (2)

A

simple

stratified

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13
Q

classificationof epithelial tissue shape (3)

A

columnar
cuboidal
squamous

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14
Q

nine common types of epithelia found in human body

A
  • simple squamous
  • simple cuboidal
  • simple columnar
  • stratified squamous
  • stratified cuboidal/columnar
  • pseudostratifiedd columnar
  • transitional
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15
Q

where can the simple squamous epithelium be found (3) specific
(2) broad

A
  • aveoli of lungs
  • glomerulus of kidneys
  • lining of capillaries
  • lining ograns (eg intestines)
  • lining cardiovascular system (heart and blood vessels)
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16
Q

simple squamous epithelium provides ….(2)

A
  • a barrier of least resistance to diffusion

- smooth frictionless surface

17
Q

simple cuboidal epithelium provides …(1)

and is involved in (2)

A

a simple channel for the movement of substance

secretion or absorbtion

18
Q

where can simple cuboidal epithelium be found (1) broad

(2) examples

A

lining of ducts and tubules
eg
ducts in partoid salivary gland
kidney tubules

19
Q

simple columnar epithelium provides..(1) and is involved in.. (2)

A

-minimal barrier

  • absorption (if cells have microvilli)
  • movement along surface (if cells have cilia )
20
Q

where can simple columnar epithelium be found (1) microvilli eg
(1) cilia eg

A

gastrointestinal tract (microvilli)

female reproductive tracts (with cilia)

21
Q

name two types of stratified squamous epithelia

A

stratified squamous keratinised

statified squamous non-keratinised

22
Q

stratified squamous epithelium provides a ……, …… ……. to ……..
in either a ……. or ….. environment

A

solid smooth barrier
abrasion
dry(keratinised)
wet (nonkeratinised)

23
Q

where can stratified squamous non-keratinised epithelium be found (1) broad
(3) specific

A

moist environments

oral cavity, vagina, anal canal

24
Q

where can stratified squamous keratinised epithelium be found (1) broad (1)specific

A

dry environments

epidermis of skin

25
Q

what does stratified cuboidal/columnar epithelium look like

A

layer of cuboidal cells, with columnar cells ontop

26
Q

stratified cuboidal/columnar epithelium provides ….
and is NOT involved in ….
just transmition of fluids from …… to …….

A

solid conduit for transport of substances

NOTinvolved in secretion/absorbtion
just transmition of fluids from glands to epithelial surfaces

27
Q

where is stratified columnar/cuboidal epithelium found (1) braod area, (3) examples

A

sufaces of major ducts
eg salivaryglands
pancreas
liver

28
Q

pseudostratified columnar epithelium is most commonly used to …. in the …….
less commonly used for… in the ….

A

transport material along its surface in the respiratory tract

absorption and cellular modification in the male reproductive tract

29
Q

what type of epithelium lines respiratory tract

the male reproductive tract

A

pseudostratified ciliated epithelium

pseudostratified columnar with stereocilia

30
Q

transitional epithelium provides……..(1)due to …..(1)

A

a solid barrier to the movement of any substances

duet to tight junctions

31
Q

what allows transitional epithelium to expand to accommodate greater volume

A

intracellular membrane `

32
Q

where is transitional epithelium found (1) and (3) eg

A

exclusively in the urinary system

eg ureter, urinary bladder, urethera

33
Q

what shape are surface cells in a transitional eputhelium

A

dome shaped

34
Q

why is transtional epithelium water tight

A

because of the numerous tight junctions it has

Histology (11 decks)

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