Anatomy of respiratory

Question 1

main anatomical features of airways

Answer 1

nose, pharynx, epiglottis, larynx, trachea, bronchus, lung (last three lower respiratory tract)

Question 2

gross anatomical features of lungs

Answer 2

two tissures (horizontal and oblique) and three lobes on right lung and one fissure (oblique) and two lobes on left

Question 3

different classes of airways

Answer 3

trachea, primary bronchi, smaller bronchi,- conducting zone. bronchioles, alveoli - respiratory zone

Question 4

two alveolar classes

Answer 4

type I alveoli - gas exchange, type II alveoli- release pulmonary surfactant so as to lower surface tension or differentiate to replace damaged type I cells

Question 5

how does resistance to airflow vary across the respiratory tree

Answer 5

more resistance in trachea and bronchi because even though they have larger diameters, there are less of them compared to heaps of alveoli which mean there is more surface area for air flow in alveoli

Question 6

air in conducting zone sits in

Answer 6

dead space