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Histology > 1st Semester > Flashcards

1st Semester Flashcards

1
Q

Glycocalyx def and func

A

Membrane proteins with carb side-chains
Cell-to-cell recognition

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2
Q

Microvilli def and func

A

1 micrometer
Bundles of actin and myosin
Increase surface area

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3
Q

Stereocilia def and func

A

8-10 micrometers
Actin filaments
Very long microvilli

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4
Q

Cilia def and func

A

5-10 micrometers
Microtubules, Nexin & Dynein
Movements

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5
Q

Collagen type 1

A

Bone, Skin, Tendon, Dentin

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6
Q

Collagen type 2

A

Cartilage

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7
Q

Collagen type 3

A

Reticular fibers

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8
Q

Collagen type 4

A

Basal Lamina

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9
Q

Collagen type 5

A

Hair, Placenta

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10
Q

Basal membrane is made of

A

Basal lamina + Lamina Fibroreticularis

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11
Q

Basal Lamina is made of

A

Lamina rara/lucida externa
Lamina densa
Lamina rara/lucida interna

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12
Q

Zona occludens

A

Tight Junction, Diffusion

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13
Q

Macula adherens

A

Desmosome, Cell-to-cell communication and intermediate filament anchorage

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14
Q

Hemidesmosome

A

Binds epithelium to basal membrane

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15
Q

Zona adherens

A

Physical integrity of epithelium

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16
Q

Gap Junction

A

Exchange of ions, metabolites, messengers between adjacent cells

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17
Q

Layers of S.N.K

A

Stratum Basale
Stratum Spinosum
Stratum Planocellulare

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18
Q

Layers of thin S.K

A

Stratum Basale
Stratum Spinosum
Stratum Granulosum
Stratum Corneum

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19
Q

Layers of thick S.K

A

Stratum Basale
Stratum Spinosum
Stratum Granulosum
Stratum lucidum
Stratum Corneum

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20
Q

Urothelium cells

A

Basal (Cuboidal or Columnar)
Pear shaped cells
Umbrella cells

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21
Q

Granules in Serous acini

A

Zymogen granules

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22
Q

Granules in Mucous acini

A

Mucigin granules

23
Q

Stain that turns mucous acini Turqoise

A

Movat (pentachrome) stain, stains carbs

24
Q

Intercallated duct cells

A

Simple cuboidal

25
Q

Striated duct cells

A

Simple Columnar

26
Q

Interlobular duct cells

A

Stratified cuboidal/columnar

27
Q

Excretory duct cells

A

Pseudostratified columnar

28
Q

Merocrine secretion

A

Continuous
Salivary

29
Q

Apocrine secrection

A

Needs accumulation
Secreted with cytoplasm
Mammary gland, modified sweat gland.

30
Q

Holocrine secretion

A

Whole cell ruptured
Needs to be fully replaced
Sebaceous gland

31
Q

Granules in Plasma cell

A

Histamin (allergy)
Heparin (blood clots)
Leucotriene (Branchi mm contraction)

32
Q

Ground substance contains

A

Hyaluronan
Glycosaminoglycans
Glycoproteins
Proteoglycans

33
Q

Proteoglycans are

A

Core protein + GAGs

34
Q

Glycoproteins are

A

Anchoring collagen to cell surface

35
Q

Stain for Reticular fibers

A

Silver impregnation, BLACK

36
Q

Stain for Elastic fibers

A

Resorcin-fuchsin, lilac
Orcein, Brown

37
Q

Stain for Collagen

A

H.E, pink
Trichrome, blue

38
Q

Order of Leukocytes

A

Neutrophil gran (40-75%)
Lymphocytes (20-50%)
Monocytes (2-10%)
Eosinophil gran (1-6%)
Basophil gran (<1%)

39
Q

Hyaline Cart.

A

2-8 chondrocytes
Perichondrium, except articulating surfaces

40
Q

Elastic cart.

A

1-2 chondrocytes
Always perichondrium

41
Q

Fibrocart.

A

1-2 chrondrocytes
Never perichondrium

42
Q

Layers of perichondrium

A

Stratum fibrosum
Stratum chondroblasticum

43
Q

Interstitial growth is

A

Embryonic cartilage growth

44
Q

Appositional growth is

A

Bone remodelling, in adult life

45
Q

Newly synthesised bone

A

Osteoid

46
Q

Yellow bone stain

A

Schmorl’s Picrothionin

47
Q

Cartilage zones

A

Resting zone
Zone of Proliferation
Zone of Hypertrophy/Degen.
Zone of Calcification
Zone of Ossification

48
Q

Sarcomere

A

Striated muscle unit
A (dark) = Actin + Myosin
I (light) = Actin
Z (intermed.) = Filamin, actin binding protein

49
Q

Layers of muscles

A

Epimysium
Perimysium
Endomysium

50
Q

Eberth Lines

A

Intercalated disc junction between 2 cardiac cells

51
Q

Yellow/brown granules

A

Lipofuscin granules, lipid containing residues of lysosomal digestion

52
Q

Pericyte

A

Around a vessel
Regulates cell permeability, sort of stem cell

53
Q

Layers of vessels

A

Tunica intima
Int. Elastic membrane (no in vv)
Tunica Media
Ext. Elastic membrane
Tunica Adventitia

Histology (5 decks)

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