histology

Question 1

nasal cavity vestibule

Answer 1

keratinised stratified squamous epithelium

Question 2

nasal cavity deeper

Answer 2

keratin is lost

stratified squamous epithelium

Question 3

nasal cavity deepest

Answer 3

respiritory epithelium

Question 4

respiratory epithelium

Answer 4

pseudostratified ciliated columnar epithelium with goblet cells

Question 5

oropharynx and epiglottis

Answer 5

non-keratinised stratified squamous epithelium

Question 6

vocal folds and adjacent structures

Answer 6

stratified squamous epithelium

Question 7

larynx

Answer 7

cartilage and muscles with respiratory epithelium

Question 8

trachea

Answer 8

cartilage and fibroelastic tissue and smooth muscle
respiratory epithelium
basal lamina
lamina propria of connective tissue and abundant elastic fibres
submucosa of connective tissue that includes seromucous glands

Question 9

bronchi

Answer 9

irregular plates of cartilage 
respiratory epithelium 
lamina propria 
muscularis with a ring of smooth muscle 
submucosa with adipose tissue and some seromucous glands

Question 10

bronchioles

Answer 10

lack cartilage and glands
a few goblet cells
epithelium decreases in height from columnar to cuboidal
lamina propria composed of smooth muscle, elastic and collagenous fibres

Question 11

terminal bronchioles

Answer 11

cuboidal ciliated epithelium

non ciliated club cells

Question 12

type 1 alveolar cells

Answer 12

simple squamous epithelium

Question 13

type 2 alveolar cells

Answer 13

free surface is covered in microvilli, cytoplasm display dense membrane bound lamellar bodies which contain surfactant

Question 14

alveolar macrophages

Answer 14

dust cells

Question 15

visceral pleura

Answer 15

outer layer - simple squamous epithelium, mesothelium backed by layers of fibrous and elastic connective tissue