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Anatomy > Epithelial tissue > Flashcards

Epithelial tissue Flashcards

1
Q

Characteristics

A

Cell junction
Polarity
Attachment
Avascularity
Regeneration

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2
Q

Function

A

Physical protection
Control permeability
Sensation
Secretion

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3
Q

WHat increases surface area

A

Microvilli increase absorption/secreation
Cilia moves fluids

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4
Q

what holds it together

A

intercellular connections
attachment to basement membrane
maintenance and repair

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5
Q

Intercellular connections

A

cell junctions
bonds between adjacent cells
support and communication

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6
Q

tight junction

A

nothing goes through

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6
Q

Whar does intercellular connections include

A

tight junction
gap junction
desmosomes

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7
Q

gap junction

A

things go through for communication

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8
Q

desmosome

A

belt (continious hold around)
button (interupted hold around)

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9
Q

Basement Membrane

A

Basal Lamina
2 layers

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10
Q

what are the 2 layers of basement membrane

A

lamina lucida
lamina densa

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11
Q

lamina lucida

A

thin layer produced by epithelium

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12
Q

Lamina densa

A

thick fibers produced by connective tissues

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13
Q

Hemidesmosomes

A

Attachment of epithelial cells to basal lamina

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14
Q

What is the maintenance and repair of epithelial cells

A

replaced by division of STEM cells

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15
Q

What are the classifications of epithelial tissues

A

Epithelia
Glands

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16
Q

Epithelia

A

surface epithelium (skin)
layers of cells covering external or lining internal surface

17
Q

glands

A

structures that produce secretion

18
Q

WHat are the classifications of surface epithelia (shape)

A

squamous
cuboidal
columnar

19
Q

WHat are the classifications for surface epithelia (# of layers)

A

simple
stratified

20
Q

Simple squamous epithelium

A

reduces friction
lung alveoli

21
Q

stratified squamous epithelium

A

physical protections
skin

22
Q

simple cuboidal epithelium

A

absorption and secretion
renal tubule

23
Q

Stratified cuboidal epithelium

A

protection, absorption and secretion
sweat/mammary glands

24
Q

Transitional cuboidal epithelium

A

can stretch and glide
stretch and recoil
urinary bladder

25
Q

Simple columnar epithelium

A

absorption and secretion
stomach, intestine
-microvilli for surface area + absorption

26
Q

Stratified columnar epithelium

A

protection
salivary gland duct

27
Q

Pseudostratified columnar epithelium

A

protection, secretion, cilia movement
trachea, bronchi
diff cell heigh = looks like layer
pseudo = fake
really only 1 layer

28
Q

Glandular epithelium

A

endocrine glands
exocrine glands

29
Q

endocrine glands

A

no duct
release hormones to interstitial fluid ie blood
thyroid/adrenal gland

30
Q

exocrine gland

A

produce secretion
have duct to epithelial surface
sweat gland

31
Q

types of exocrine secretion

A

merocrine
apocrine
holocrine

32
Q

Merocrine

A

released by vesicle
exocytosis
sweat gland

33
Q

apocrine

A

released by shedding cytoplasm
cell stays alive and repeats
eg milk from mammary gland

34
Q

Holocrine

A

released by cells bursting
cells die
replaced by stem cells
sebaceous gland

35
Q

structure of exocrine cells

A

unicellular
multicellular

36
Q

unicellular exocrine cell

A

goblet (only type)
scattered along epithelia
intestinal line
secrete mucin = makes mucous

37
Q

Multicellular exocrine cell structure of duct

A

simple (undivided)
compound (divided)

38
Q

Multicellular exocrine cell shape of secretion portion

A

tubular (tube)
alveolar/acinar (chamber)
tubuloaveolar (mix of both)

39
Q
A

Anatomy (8 decks)

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