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RESPI > Histology > Flashcards

Histology Flashcards

1
Q

External respiration occurs in

A

Lungs

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2
Q

Internal respiration occurs in

A

Hemoglobin

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3
Q

Shift of epithelial lining at entrance of nasal cavity

A

Keratinized squamous epithelium to pseudostratified columnar ciliated epithelium

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4
Q

Predominant cells in respiratory epithelium

A

Ciliated columnar cells
Goblet cells
Basal cells

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5
Q

Cells in trachea and bronchi

A

Clara cells

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6
Q

Function of Clara cells

A

secrete surfactant

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7
Q

Function of brush cells

A

Sensory receptor cells

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8
Q

Function of surfactant

A

Lower surface tension –> maintain inflation of alveoli

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9
Q

Epithelia of nostril

A

Stratified squamous epithelium

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10
Q

Epithelia of respiratory segment

A

Respiratory epithelium

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11
Q

Epithelia of olfactory segment

A

Olfactory epithelium

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12
Q

Quantity of cartilage as we get to alveoli

A

Decrease in cartilage as getting to alveoli –> increase in smooth muscle
Decrease in cartilage –> decrease in goblet cells

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13
Q

How do olfactory glands look under microscope

A

Dark brown-red

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14
Q

What lacks olfactory segments

A

Goblet cells

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15
Q

Most abundant characteristic of olfactory segments

A

Nerve fibers

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16
Q

Secretions of olfactory segments are serous or mucous

A

Serous (H2O and proteins)

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17
Q

Function of watery secretions

A

Dissolve odorant molecules to facilitate detection

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18
Q

Name of olfactory glands

A

Bowmnan’s glands

19
Q

Epithelium of larynx

A

Stratified squamous epithelium

20
Q

What is at middle of larynx

A

Elastic cartilage

21
Q

Esternal to internal layers trachea

A

Adventitia - cartilaginous layer - submucosa - mucosa

22
Q

Submucosa of trachea contains

A

Tubuloacinar glands, seromucous glands

23
Q

Difference between bronchi (the main bifurcations of trachea) and trachea

A

Brinchi have plates rather than rings of cartilage + have a layer of smooth muscle between lamina propria and submucosa

24
Q

Number of glands and goblet cells increases or decreases as getting to alveoli

A

Decreases

25
Q

Epithelium in large bronchioles

A

Pseudostratified ciliated columnar

26
Q

Epithelium in terminal bronchioles

A

Simple cuboidal w/ mixed ciliated cells

27
Q

What lacks terminal bronchioles

A

Goblet cells

28
Q

Is there cartilage and glands in bronchioles

A

NO

29
Q

Where does gas exchange take place

A

Alveoli

30
Q

Mucosa structure

A

Spiral bundles of smooth muscle

31
Q

Submucosa structure

A

Loose - dense FECT

32
Q

Muscularis externa structure

A

Hyaline cartilage

33
Q

Adventitia structure

A

Loose FECT

34
Q

Alveoli look like under microscope

A

White spaces

35
Q

Function of type 1 pneumocytes

A

Gas exchange

36
Q

Function type II pneumocytes

A

Secrete surfactant

37
Q

Function of pulmonary macrophages

A

Phagocytosis

38
Q

Difference of type I pneumocyte and II under microscope

A

Type I have fuller inside than II

39
Q

Type I pneumocytes are

A

Simple squamous alveolar cells

40
Q

Which can proliferate and differentiate

A

Type II pneumocytes

41
Q

Where is surfactant stored

A

Lamellar bodies

42
Q

Macrophages under microscope

A

Brown-black in hemosiderin pigment

43
Q

Where are type I pneumocytes found

A

Beneath alveolar lining cells

44
Q

Where are pneumocytes type II found

A

Thick elastic fibers

RESPI (16 decks)

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