resp histology formatives

Question 1

name 4 features of resp epithelium

Answer 1

basement membrane
goblet cells
lines nasopharynx
pseudostratified

Question 2

what does pseudo stratified mean

Answer 2

all cells contact BM

Question 3

where does resp epithelium line

Answer 3

conducting airways

sinuses

Question 4

what are alveoli lined by

Answer 4

pneumocytes

Question 5

what are the nares lined by

Answer 5

stratified squamous keratinising epithelium

Question 6

what are the vocal cords lined by

Answer 6

non-keratinising stratified squamous epithelium

Question 7

what is the apex of the nasopharynx lined

Answer 7

olfactory epithelium

Question 8

what are the larynx n trachea supported by

Answer 8

hyaline cartilage

present as c-rings in trachea

Question 9

what tissue bridges gap btwn free edges of c shaped cartilages in trachea

Answer 9

smooth muscle (trachealis)

Question 10

what is present in the walls of bronchi but not bronchioles

Answer 10

cartilage

Question 11

where is rink’s space

Answer 11

in the vocal cords btwn vocal epithelium n vocal ligament

Question 12

which cells secrete surfactant

Answer 12

type 2 pneumocytes

Question 13

what are alveolar macrophages an example of

Answer 13

phagocytes

Question 14

which cells produce mucus

Answer 14

goblet cells

Question 15

which cells secrete lipoproteins that prevent luminal adhesion

Answer 15

Clara cells

Question 16

what do type 1 pneumocystis form

Answer 16

air/blood barrier

Question 17

how many layers are there in the air blood barrier

Answer 17

variable

but

1. surfactant
2. type I pneymocyte
3. BM
4. vascular endothelial cell

Question 18

how thick is the air-blood barrier

Answer 18

600-800 nm

Question 19

where are the pores of Kohn

Answer 19

alveolar walls

Question 20

what do the pores of Kohn do

Answer 20

• allow rapid even distribution of air through lungs on inhalation
• also permit microbes passage from 1 alveolus to another