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A & P 1 > Midterm 2- epithelial tissue > Flashcards

Midterm 2- epithelial tissue Flashcards

1
Q

Name what type of epithelium: alveolus within the lung

A

simple squamous

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2
Q

Name what type of epithelium: Bowman’s capsule in kidney

A

simple squamous

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3
Q

Name what type of epithelium: enothelium within a venule

A

simple squamous

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4
Q

Main function of Simple Squamous epithelium?

A

very thin tissue, rapid diffusion (single layer of cells)

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5
Q

Main function of Simple Cuboidal epithelium?

A

single layer, central NUCLEUS; absorbtion, secretion

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6
Q

Name what type of epithelium: tubules in kidneys

A

simple cuboidal

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7
Q

Name what type of epithelium: follicular cells in thyroid (endocrine gland)

A

simple cuboidal

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8
Q

main distinction of simple columnar

A

LARGEST cytoplasmic volumes of all epithelia (high organelle density and energy reserves so can be involved in complex secretory/absorption functions)

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9
Q

Name what type of epithelium: small intestine lining

A

simple columnar epithelium with microvilli; 90% of absorption from digestion tract occurs here

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10
Q

Name what type of epithelium: ciliated in small bronchioles of respiratory tract/Fallopian tubes of female reproductive tract

A

ciliated types of simple columnar epithelium

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11
Q

What is the name of the cell that is a specialized columnar cell secreting mucous?

A

goblet cell (unicellular gland) (ex: secretion from these cells into lumen of small intestine)

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12
Q

Name what type of epithelium: stomach, small/large intestine, bronchioles, exocrine ducts, large sucts of kidney

A

simple columnar epithelium

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13
Q

Name what type of epithelium: upper and lower respiratory tract (ciliated types)

A

pseudostratified epithelia

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14
Q

Name what type of epithelium: ALL cells reach the basement membrane but not the apical surface

A

pseudostratified epithelia

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15
Q

Name what type of epithelium: ducts of larger glands/male urethra (non-ciliated)

A

pseudostratified epithelia

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16
Q

Explain the role of pseudostratified epithelium cilia in the respiratory tract?

A

beat in rhythmic manner to propel mucous along surface cells from lower tract “ciliary escalator”

17
Q

Name what type of epithelium: mutiple layers of epithelial cells; have apical and basal layers in addition to apical and basal surfaces for each epithelial cell with in tissue

A

stratified epithelium

18
Q

Name what type of epithelium: outer layer of skin

A

stratified squamous keratinized epithelium (SSK)

19
Q

Name what type of epithelium: mucous membrane tissue- oral cavity, palpebral conj., corneal epithelium, esophagus, rectum

A

stratified squamous NON-keratinized epithelium (SSNK)

20
Q

which type of stratified squamous epithelium is nucleated?

A

apical tissues in SSNK (NOT in SSK)

21
Q

Where is keratin seen in SSK?

A

mid-layer tissues

22
Q

Name what type of epithelium: in ducts of glands, two-layer tissue

A

stratified cuboidal

23
Q

Name what type of epithelium: RARE in human body, only found in isolated places like bulbar conj.

A

stratified columnar

24
Q

Name what type of epithelium: urinary epithelium (bladder, ureter, portion of urethra), can stretch relative to other types, squamous appearance when distended, cuboidal when not (but with more than 2 layers), dome shape of apical surface when not distended

A

transitional stratified

25
Q

Hematoxylin– what kind of stain, what does it stain, color?

A

basic stain, stains acidic (basophilic) structures, PURPLE

EX: stains nuclei, ribosomes, DNA, rER = composed of nucleic & amino acids

26
Q

Eosin- what kind of stain, what does it stain, color?

A

acidic stain, stains basic (acidophilic) strucures, RED/PINK

EX: stains collagen in connective tissue

27
Q

What is the external layer of the basement membrane consists of?

A

basal lamina– 1. outer lamina lucida 2. inner lamina densa

28
Q

Where are the cell junctions of epithelia?

A

lateral portion of the cell

29
Q

lateral surface nearest apical surface; anchoring junction

A

TIGHT junctions (zonula occludens) TO

30
Q

overlapping transmembrane proteins; anchoring junction

A

BELT junctions (zonula adherens) AB

31
Q

unitizes connexons that allow for direct cell-cell communication

A

GAP junctions

32
Q

overlapping transmembrane proteins anchored into plaques in the cell membrane; anchoring junction

A

Desmosomes

33
Q

anchors epithelium to underlying basal lamin

A

hemidesmosomes

34
Q

where do glands originate?

A

epithelial cells

35
Q

What is the difference between EXOcrine and ENDOcrine glands?

A

Exocrine glands secrete directly into a duct and Endocrine glands secrete directly into a blood vessel

36
Q

Name an example of a single celled gland?

A

GOBLET!

A & P 1 (4 decks)

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