Histology

Question 1

Functions of the nasal cavity

Answer 1

warms, moistens and filters air

Question 2

what epithelium is found in the nasal cavity

Answer 2

Olfactory epithelium, keratinised stratified squamous epithelium and respiratory epithelium

Question 3

What is respiratory epithelium

Answer 3

goblet cells as well as pseudostratified ciliated columnar epithelium

Question 4

what does the lamina propria of the nasal cavity contain

Answer 4

loose connective tissue with seromucous glands and venous sinuses

Question 5

true/false - the oropharynx contains respiratory epithelium

Answer 5

false - it contains stratified squamous epithelium

Question 6

What epithelium lines the epiglottis

Answer 6

anterior and upper posterior is stratified squamous epithelium
All else is respiratory

Question 7

the vocal folds of the larynx are lined with _____

Answer 7

Stratified squamous epithelium

Question 8

trachea contains what type of c shaped cartilage

Answer 8

hyaline

Question 9

what lines trachea

Answer 9

respiratory epithelium with basal lamina, lamina propria (elastic tissue with elastic fibres), submucosa with seromucous glands and connective tissue

Question 10

what shape cartilage do bronchi have

Answer 10

plates

Question 11

the upper respiratory tree is fed by what blood supply

Answer 11

bronchial arteries and veins

Question 12

bronchi have respiratory epithelium and a lamina propria as well as….

Answer 12

muscularis with smooth muscle ring, adipose and seromucous glands

Question 13

what are terminal bronchioles

Answer 13

last bronchioles with respiratory conducting function

Question 14

What are respiratory bronchioles

Answer 14

first conducting part of respiratory tree

Question 15

what does bronchial smooth muscle respond to

Answer 15

hisamine, parasympathetic innervation

Question 16

what would the lamina propria of bronchioles look like?

Answer 16

contains smooth muscle and some elastic and collagenous fibres

Question 17

what epithelium do terminal bronchioles have

Answer 17

cuboidal ciliated

club cells, non ciliated and above level of adjacent cells

Question 18

what do club cells do

Answer 18

act as stem cells, detoxifacation, surfactant production and immune modulation

Question 19

Type 1 alveolar cells

Answer 19

simple squamous to line alveoli

Question 20

Type 2 alveolar cells

Answer 20

produce surfactant and release via exocytosis to reduce surface tension

Question 21

Why is surfactant important

Answer 21

reduces surface tension of water to reduce the chance of alveolar collapse

Question 22

what do alveolar macrophages do?

Answer 22

phagocytose inhaled particles that escaped mucus entrapment. travel up respiratory tree into pharynx and are swallowed

Question 23

what does the air-blood barrier consist of

Answer 23

type I alveolar cells, endothelial cells and basal lamina

Question 24

what does mesothelium consist of

Answer 24

layers of fibrous and elastic connective tissue with outer simple squamous epithelium