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Pulm > Histo - Images > Flashcards

Histo - Images Flashcards

1
Q

Where in the respiratory tract would you find this type of epithelium? Type of epithelium?

A

Nasal cavity

PSCC

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2
Q

What is the function of the cells directly under the PSCC cells?

A

Basal cells - stem cells for ciliated and goblet cells

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3
Q

What is the blue-staining area? What does it contain?

A

Lamina propria

Blood vessels, lymphocytes and other immune cells, seromuocus glands

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4
Q

Where would you find this PSCC epithelium?

A

Nasal cavity

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5
Q

Name the dark pink, elongated cell and its function

A

Supporting cell

Provides metabolic and physical support to olfactory cells

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6
Q

Name the yellow elongated cells and their function

A

Olfactory cells

Basal processes collectively form olfactory nerve for odor transduction

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7
Q

Name the short dark pink cells and their function

A

Basal cells

Regenerate other cells

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8
Q

Name the outer layer and what it consists of

A

Adventitia/serosa

Connective tissue w/ or w/o mesothelial layer

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9
Q

Name the layer under the adventitia and what it consists of

A

Muscularis externa

Smooth muscle in inner circular layer and outer longitudinal layer

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10
Q

Name the layer under the muscularis externa and what it consists of

A

Submucosa

Connective tissue

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11
Q

Name the layer under the submucosa (duh!) and what it consists of

A

Mucosa

Epithelium, lamina propria (c.t.), muscularis mucosa

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12
Q

Where are we in the respiratory tract?

A

Larynx

(notice transition from PSCC on left to simple squamous on right)

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13
Q

What is the yellowish material?

A

Hyaline cartilage forming C-shaped ring in trachea

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14
Q

What else is surrounding the tracheal lumen besides hyaline cartilage?

A

Trachealis muscle

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15
Q

What is the narrower lumen at the top of the slide?

A

Esophageal lumen

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16
Q

Where in the respiratory tract are we?

A

Trachea

(notice the hyaline cartilage and PSCC)

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17
Q

What is the orange arrow pointing to?

A

Basement membrane

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18
Q

What is the blue box encompassing? What cells are present?

A

Lamina propria

Lymphocytes

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19
Q

What is the red box encompassing? Red circle?

A

Submucosa

Seromucous gland

20
Q

What is the green box encompassing?

A

Hyaline cartilage layer

21
Q

Where in the respiratory tract are we?

A

Posterior tracheal wall

(notice thick trachealis muscle layer)

22
Q

Where are we in the respiratory tract?

A

Trachea

(THICK BM and thick trachealis muscle layer)

23
Q

Where in the respiratory tract are we?

A

Intrapulmonary bronchi

(cartilage now in plates)

24
Q

Where in the respiratory tract are we?

A

Intrapulmonary bronchi

(Red circle = appearance of MUSCULARIS MUCOSA

Blue box = cartilage plate)

25
Q

Where in the respiratory tract are we?

A

Bronchiole

26
Q

What is no longer present at this level?

A

Submucosa (and its glands)

We’re looking at a bronchiole

27
Q

What is present at this level that would not be found in the trachea or upper airways?

A

Muscularis mucosa

(IS present in intrapulmonary bronchi and down)

28
Q

What special cell type is present in this structure and what is its purpose?

A

Clara cell

Secrete a surface-active protein, CC16

29
Q

Where in the respiratory tract are we?

A

Respiratory bronchiole

(notice that part of it has alveoli)

30
Q

What type of epithelium is present?

A

Ciliated cuboidal

31
Q

What is the area marked in black box? Orange box?

A

Bronchiole

Terminal bronchiole

32
Q

What are the green circles encompassing?

A

Respiratory bronchioles

33
Q

What is this? What do “SM” and “A” stand for?

A

Surface of a respiratory bronchiole

Smooth muscle and alveoli

34
Q

What is the structure denoted by the black arrow? Red circles?

A

Alveolar duct (almost no walls; boundaries made up of alveoli)

Alveolar sacs

35
Q

Which arrow points to the type I pneumocyte? Type II pneumocyte?

A

Orange

Purple

36
Q

What is the function of the cell denoted by the blue arrow?

A

Macrophage - scavenges inhaled material and either travel to the throat where they’re swallowed as mucus or retreat to the alveolar septum where they can remain quiescent for years (think recurrent TB)

37
Q

Which cell can be known as a heart failure cell?

A

Macrophage (blue arrow) - scavenge RBCs during heart failure = heart failure cell

38
Q

What is the function of the area marked by the blue arrow?

A

Thick region of alveolar septum - contains macrophages, fibroblasts, and fibers that intervene between alveolus and capillary

39
Q

What makes up the region marked by the purple arrow?

A

Thin region of alveolar septum - type I pneumocyte, endothelial cell of capillary, fusion of basal lamina from both cell types, thin layer of surfactant

40
Q

What is the function of the area marked by the purple arrow?

A

Gas exchange (thin region)

41
Q

What structure is marked in red? Orange?

A

Bronchiole

Pulmonary artery

42
Q

What structure is marker in yellow? Green?

A

Terminal bronchiole (notice it gives off resp bronchiole)

Respiratory bronchiole (notice the alveoli coming off)

43
Q

What area is marked in blue? Purple? Grey?

A

Arteriole

Alveolar duct

Branch of pulmonary vein and capillary bed

44
Q

At what level do the pulmonary arterioles form the structure marked by the purple arrow?

A

Level of alveolar duct (arrow = capillary bed)

45
Q

What structure is marked in black? Yellow?

A

Alveoli

Connective tissue

46
Q

What is the function of the small dark holes (ha)?

A

Alveolar pores of Kohn - allow airflow between alveoli when normal airspace is occluded

47
Q

What structure is marked by the green arrow? Purple arrows? Yellow arrow?

A

Type I pneumocyte

Type II pneumocytes

Alveolar pore of Kohn

Pulm (33 decks)

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