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Biology 121 > lab 1 epithelium packet > Flashcards

lab 1 epithelium packet Flashcards

1
Q

what are the four basic tissue types found in the body?

A

epithelial, connective, muscular and nervous

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2
Q

what are the characteristics of pseudostratified columnar? (simple epithelia)

A

not all cells reach the free surface, shorter cells are covered over by taller ones, looks stratified, every cell reaches basement membrane

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3
Q

what is the purpose of simple squamous epithelia?

A

permits rapid diffusion or transport of substances
secretes serous fluids

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4
Q

which ephithelium has nuclei at several layers with cilia and goblet cells, secretes and propels mucus?

A

pseudostratified epithelium

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5
Q

which epithelia attaches to the basement membrane?

A

deepest layer of stratified epithelia

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6
Q

what is the formation of simple cuboidal epithelium? and the purpose? where is it found? LTMSGBKT

A

simple layer of square or round cells
absorbs and secretes, mucus production and movement
liver, thyroid, mammary, salivary glands, bronchioles, and kidney tubules

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7
Q

what is purpose of simple columnar epithelium? what are the cells like?

A
  • oval nuclei in basal half of cell
  • absorbs and secretes mucus
  • brush border of microvilli in some organs, may possess goblet cells
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8
Q

where can i find epithelial tissue in the body? and the function?

A
  1. covers surface
  2. lining cavities
  3. lining tube like structure esophagus, tubes, stomach
    EX. blood vessels, veins/arteries, intestines, skin, GLAND, esophagus, fallopian tube, atrium, stomach
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9
Q

what is one layer of epithelium cells called?

A

SIMPLE

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10
Q

what is more than one layer of epithelium cells called?

A

stratified

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11
Q

what does pseudo mean?

A

fake or false

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12
Q

does the psuedostratified reach free surface? and are shorter cells covered over by taller ones? does it look stratified? does every cell reach basement membrane?

A

NO
YES
YES
YES

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13
Q

what is transitional epithelium?

A

it’s very stretchy

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14
Q

why do we need multiple layers of the stratified cells

A

need more production or more protection/function

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15
Q

where is there multiple layers of stratified squamous ?

A

esophagus, vagina

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16
Q

what is the function of epithelium?

A

absorbs, secretes, transports, protects

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17
Q

main job of columnar epithelium ?

A

absorbtion

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18
Q

main job of cuboidal epithelium?

A

secrete

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19
Q

main job of the squamous epithelium?

A

transport

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20
Q

what is the bronchioles?

A

mucus

21
Q

where can i find simple columnar epithelium? (think of villi during endoscopy)

A

kidneys, GI system, uterus & uterine

22
Q

where is the nucleus in the columnar epithelium?

A

bottom half of cell

23
Q

define pseudostratified epithelium and where is it found?

A

looks like stratified but it is not, where some cells reach the B.M. but not all of them
has cilia
male urethra and respiratory tract

24
Q

what does keratinized stratified squamous mean?

A

a layer of dead cells

25
Q

what is the sole of the foot?

A

stratified squamous and it is keratinized ; 1 layer of dead cell

26
Q

what is keratinized stratified squamous ? (sole of foot)

A

it is 1 layer of dead cells and it is for protection and resistance to abrasion
most exposed to surface

27
Q

what is the vagina classified as?

A

nonkeratinized
if it had dead cells , the woman would have no feelings during sexual intercourse

28
Q

what is esophagus classified under? keratinized or nonkeratinized?

A

nonkeratinized ; it has sensations as we eat it pushes up to get food down

29
Q

keratinized and nonkeratinized can only be found in the ….?

A

stratified squamous

30
Q

what is stratified cuboidal epithelium?

A

2+ cell layers
secretes sweat
sperm and ovaries

31
Q

what is transitional epithelium?

A

it is unique and multilayered
it is flat
easy to stretch , found in ureter and bladder

32
Q

where else can i find simple squamous epithelium?

A

bowman’s capsule in kidney and lining of heart, vessels and lung

33
Q

where can i find simple cuboidal cells?

A

kidney rubles and secretory portion of the gland

34
Q

where else can i find simple columnar epithelium?

A

digestive from stomach to anus, duodenum and lung airways

35
Q

where can i find pseudostratified columnar epithelium?

A

respiratory tract and some parts of the male urethra

36
Q

where can i find stratified squamous epithelium?

A

epidermis , oral mucousa, vagina and esophagus

37
Q

where can i find stratified cuboidal epithelium?

A

ducts of gland

38
Q

where can i find stratified columnar epithelium?

A

urethra

39
Q

where can i find transitional epithelium?

A

ureter and bladder

40
Q

does endorcrine gland has to reach blood? is it a special kind of epithelial tissue? where can i find it in the glands? give an example

A

yes
kidney, pituitary, adrenal
secretes
ex. pancreas produces insulin

41
Q

where can i find exocrine glands? (think what comes OUT EXO = OUT)

A

mucus, sweat, oil, earwax, digestive enzymes

42
Q

what is merocrine secretion? where can i find it?

A

secretes by exocytosis
salivary glands, tear glands, pancreas, gastric glands

43
Q

what is apocrine gland?

A

part of gland is pinched off
found in axillary, sweat and mammary gland

44
Q

what is the holocrine secretion?

A

rupture of plasma membrane
releases the entire cell contents into lumen and kills cell
ex sebaceous gland

45
Q

two categories of the exocrine glands

A

unbranched duct (simple)
branched duct (compound)

46
Q

tubular glands?

A

like a tube

47
Q

acinar glands?

A

dilated sac

48
Q

what is tubulesacinar?

A

glands have features of both tubular and acinar glands

Biology 121 (8 decks)

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