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Bloc B - Respiration > Histology II Oct4 M2 > Flashcards

Histology II Oct4 M2 Flashcards

1
Q

name of muscle in trachea’s submucosa + where

A

trachialis muscle. between ends of hyaline cartilage C ring

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2
Q

glands found in trachea’s submucosa

A

serous acini and mucous acini

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3
Q

pulm bronchus: mucosa diff with trachea

A

epith has less goblet cells (want less mucous bc narrower)

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4
Q

pulm bronchus: submucosa diff with trachea

A
  • plates of hyaline cartilage (discontinuous)
  • SM is continuous
  • ONLY SEROUS GLANDS
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5
Q

pulm bronchus: disposition of SM and cartilage

A

SM is oblique and wraps around bornchus in diff directions

Cartilage also oblique and goes in diff directions. is continuous

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6
Q

pulm bronchus: SM position relative to cartilage and glands

A

between cartilage and LP. Is most luminal portion of submucosa

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7
Q

regular bronchiole: mucosa diff with bronchus

A
  • festum shape
  • COLUMNAR
  • no goblet cells
  • LP less prominent (in the festum area)
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8
Q

regular bronchiole: submucosa diff with bronchus

A
  • almost entirely SM cells
  • NO CARTILAGE
  • rare SEROUS glands
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9
Q

regular bronchiole: adventitia diff with bronchus

A

more tiny

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10
Q

terminal bronchiole: mucosa diff with regular bronchiole

A
  • still columnar
  • ciliated columnar cells + non-ciliated clara or club cells producing surfactant
  • little bit of LP
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11
Q

terminal bronchiole: submucosa diff with regular bronchiole

A
  • SM is only 1-2 layers

- NO glands

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12
Q

terminal bronchiole: adventitia diff with regular bronchiole

A

can be there but thinner

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13
Q

main diff between resp bronchiole and terminal bronchiole

A

resp is segmented (1-3 interruptions)

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14
Q

resp bronchiole: epith diff with term bronchiole

A
  • no columnar cells
  • only CUBOIDAL club cells
  • no LP
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15
Q

resp bronchiole: submucosa diff with term bronchiole

A

1-2 layers of SM

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16
Q

resp bronchiole: adventitia diff with term bronchiole

A

no adventitia

17
Q

alveolar duct main diff with resp bronchiole

A

much more segmented

18
Q

alveolar duct remaining histo layers

A

epithelium. SQUAMOUS club cells

19
Q

cell types in avleoli (7)

A 
pneumocyte 1
pneumocyte 2
free alv macrophage
fixed macrophage
endothelial cell
fibrocyte
monocyte
20
Q

alveolar pore def + other name

A

small opening between 2 alveoli when wall is incomplete

Pore of Kohn

21
Q

pneumocyte type 1 def

A

flat cell, rests on BM, most of surface of alveoli

22
Q

pneumocyte type 2 def

A

bulky cell embedded in epith lining, rests on BM

23
Q

free macrophage function and what they do after

A

clear debris in airspace and then become fixed

24
Q

alv septum: fiber found

A

elastin

25
Q

endothelial cells: what type

A

squamous simple epith

26
Q

pneumocyte type 2: important structures inside (2)

A
  • mutli vesicular bodies (membrane with small vesicles inside), fuses with lamellar bodies
  • lamellar bodies: contain surfactant
27
Q

surfactant composition (is in lamellar bodies)

A

surfactant protein A,B,C,D + lecithin (phospholipid)

28
Q

BM function in alveolar wall

A

shared between endothelial cells and pneumocyte type 1

29
Q

emphysema pathophysiology (2)

A
  • macrophages move to septum releasing elastases

- cigarette smoking inhibits synthesis of lactic fiber

30
Q

last pseudostratified epith

A

in bronchus

31
Q

last hyaline cartilage containing structrure

A

bronchus

32
Q

first structure with club cells

A

terminal bronchiole

33
Q

last structure with columnar cells

A

terminal bronchiole

34
Q

last structure with adventitia

A

terminal bronchiole

35
Q

last structure with goblet cells

A

pulm bronchus

36
Q

last structure with capillaries

A

terminal bronchiole

37
Q

last structure with serous glands

A

regular bronchiole

38
Q

last structure with lamina propria

A

terminal bronchiole

Bloc B - Respiration (36 decks)

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