Histology

Question 1

which type of cartilage is found in the respiratory tract?

Answer 1

hyaline

Question 2

which connective tissue fibre predominates the respiratory tract?

Answer 2

elastic

Question 3

which type of muscle is found in the respiratory tract?

Answer 3

smooth

Question 4

describe the histology of bronchioles

Answer 4

there is no cartilage or glands,
smooth muscle gradually decreases from larger to smaller bronchioles,
the epithelium is low columnar (larger bronchioles) or cuboidal in smaller bronchioles,
have a diameter of 1mm or less
clara (club) cell secrete surfactant.

Question 5

name the predominant type of connective tissue fibres found in the alveolar walls

Answer 5

elastic

Question 6

name 3 types of cell found in the wall of alveolus and give the function of each

Answer 6

type 1 pneumocytes - gas exchange
type 2 pneumocytes - secrete surfactant
alveolar macrophages - ingesting bacteria and particles.