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A & P > epithelial tissues > Flashcards

epithelial tissues Flashcards

1
Q

types of tissues

A

epithelial, connective, skeletal, and nervous,

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2
Q

epithelial tissue function

A

lining tissues that forms the boundary between out body and the external environment. PROTECTION, ABSORPTION, FILTRATION, SECRETION

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3
Q

where can epithelial tissue be found?

A

upper respiratory tract

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4
Q

what is the top surface of an epithelial tissue called?

A

free surface or apical surface

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5
Q

what is the bottom surface of an epithelial tissue called?

A

basal surface

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6
Q

what is the membrane underneath the basal surface called?

A

basement membrane

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7
Q

what type of tissues are epithelial tissues? (avascular or vascular)

A

avascular (no blood vessels)

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8
Q

how are epithelial tissues classified?

A

number of layers and the shape of the cell

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9
Q

classifications of epithelial tissues

A

simple epithelial tissue and striated epithelial tissue
squamous, cuboidal, and columnar

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10
Q

describe simple squamous epithelial tissue

A

single, flat layer of cells that is THIN and PERMEABLE

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11
Q

simple squamous epithelial tissue function

A

rapid diffusion of materials

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12
Q

where is simple squamous epithelial tissue found?

A

in blood vessels and lung tissues

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13
Q

describe simple cuboidal epithelial tissue

A

single layer of cube-shaped cells

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14
Q

simple cuboidal epithelial tissue function

A

secretion and absorption of substances

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15
Q

where is simple cuboidal epithelial tissue found?

A

in tissues of kidneys

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16
Q

describe simple columnar epithelial tissue

A

single layer of tall, closely packed cells. these cells may have cilia and goblet cells, which secrete mucus

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17
Q

simple columnar epithelial tissue function

A

secretion of mucus for protection and absorption of substances

18
Q

where is simple columnar epithelial tissue found?

A

lining of digestive tract

19
Q

describe stratified squamous epithelium

A

thick layers of squamous epithelium

20
Q

stratified squamous epithelium function

A

provide protection for underlying layers

21
Q

where is stratified squamous epithelium found?

A

in the epidermal layer of the skin

22
Q

describe stratified cuboidal epithelium

A

more than one layer of cuboidal cells. rare in body

23
Q

where is stratified cuboidal epithelium found?

A

in salivary and mammary glands

24
Q

describe stratified columnar epithelium

A

free surface is lined with columnar cells. rare in body

25
Q

where is stratified columnar epithelium found?

A

in larynx and male urethra

26
Q

describe pseudo-stratified columnar epithelium

A

cell nuclei are found at different levels, so it appears stratified, though it is not

27
Q

pseudo-stratified columnar epithelium function

A

secretion and absorption

28
Q

where is pseudo-stratified columnar epithelium found?

A

in most of the upper respiratory tract

29
Q

describe transitional epithelium

A

vary in appearance based on stretching of the tissue. “transition”: change shape with elasticity

30
Q

where is transitional epithelium found?

A

in lining of urinary bladder

31
Q

glandular epithelium function

A

specialized to produce and secrete substances

32
Q

where is glandular epithelium found?

A

glands…

33
Q

gland

A

group of cells that secrete a fluid substance

34
Q

two ways to classify glands

A

complexity and how the substances are secreted (endo/exocrine)

35
Q

exocrine glands

A

secrete substances outward through a tube-like duct
ex: sweat

36
Q

endocrine glands

A

ductless glands that secrete hormones through the bloodstream so they can travel further distances.
packed tightly with capillaries running through the glandular tissue. cells excrete products through exocytosis.
ex: thyroid gland, thymus gland, adrenal glands, and pancreas

37
Q

types of exocrine glands

A

merocrine, apocrine, and holocrine

38
Q

merocrine exocrine glands

A

cells excrete the products via exocytosis
“mero”= part
ex: sweat glands

39
Q

apocrine exocrine glands

A

a portion of the cell pinches off with secreted products
“apo”=tip
ex: mammary glands

40
Q

holocrine exocrine glands

A

cells rupture and spill products into the duct
“hol”=whole
ex: sebaceous glands

A & P (10 decks)

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