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Cell Bio Exam 1 > Epithelium > Flashcards

Epithelium Flashcards

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Biology 101 flashcards
1
Q

Characteristics to classify epithleium

A
  • number of layers

- cell shape’-presence of specializations

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2
Q

simple epithelium

A

squamous
cuboidal
columnar

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3
Q

stratified

A

squamous nonkeratinized
cuboidal
columnar
keratinized

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4
Q

psuedostratified

A

columnar

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5
Q

transitional

A

transitional relaxed

transitional distended

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6
Q

simple squamous

A

function-blood brain barrier, filtration, exchange

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7
Q

simple cuboidal

A

locations-thyroid, renal tubules, ducts of glands

functions-absorption, secretion, barrier, conduit

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8
Q

simple columnar non cilated

A

locations-stomach, intestine

functions- absorption, secretion, barrier

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9
Q

simple columnar ciliated

A

locations-uterine tubes

functions- absorption, secretion, barrier

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10
Q

pseudostratified columnar ciliated

A

locations-trachea, bronchi, ducts of male reprod sys

functions- secretion, absorption, barrier, transport

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11
Q

stratified squamous nonkeratinized

A

locations-esophagus, distal anal canal, vagina

functions- barrier, protection

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12
Q

stratified squamous keratinized

A

locations-epidermis

function-barrier, protection

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13
Q

transitional urothelium

A

locations-ureter, urinary bladder, urethra

functions-barrier, protection, distension

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14
Q

primary monocilium nonmotile

A

chemosensors, osmoreceptors, mechanoreceptors, mediate light, taste, sound perception, pivitol role in normal tissue morphogenesis

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15
Q

general blueprint for junctional complex

A

cytoskeletal elements
Intracellular anchor proteins
CAMs [transmembrane adhesion proteins]

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16
Q

zonula occludens

A

Gene encoding for a specific claudin in renal
epithelial cells results in excessive loss of
magnesium ions in urine.
Brain cancers – loss of claudin 5
Deafness – loss of claudin 9

17
Q

heliobacter pylori

A

disrupts tight junctions causing a breach in the eputhelial lining of the stomach, causes internalization of occludins

18
Q

degree of permeability

A

dictated by mixture of claudins to occludins

19
Q

functional polarity

A

established by tight junctions

20
Q

pemphigus

A

due to autoantibodies against desmogleins

21
Q

bullous penphigoid

A

autoantibodies develop against type XVII collagen

22
Q

integrin represents

A

a cell adhesion molecule [link protein]

23
Q

problems with nexus/gap junctions

A 
female infertility
neuropathy
deafness
congenital cataracts
cardiac arrhythmias

Cell Bio Exam 1 (9 decks)

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