4. PULMONARY

Question 1

what are the conducting zones comprised of?

Answer 1

zones 1-16

includes trachea and terminal bronchioles

Question 2

What are the transitional and respiratory zones comprised of?

Answer 2

zone 17-23

includes bronchioles, alveolar ducts, and alveoli

Question 3

What are the characteristics of alveoli?

Answer 3

1. elastic
2. thin walled
3. surface for gas exchange
4. pores of Kohn

Question 4

what is Fick’s law of diffusion?

Answer 4

rate of transfer of a gas
through a tissue is directly
proportional to the partial pressure
differential between the two sides,
tissue surface area, a diffusion
constant, and inversely proportional
to the tissue thickness

Question 5

dynamic lung volumes depend upon what 2 factors?

Answer 5

1. maximal FVC of lungs

2. velocity of flow

Question 6

what indicates primary airway capacity

Answer 6

FEV/FVC

Question 7

how do obstructive diseases impact FEV?

Answer 7

significantly lower FEV

Question 8

how do restrictive diseases impact FEV?

Answer 8

normal or above FEV, but the volume of air is decreased

Question 9

Two ways to view ventilation:

Answer 9

1. minute ventilation

2. alveolar ventilation

Question 10

what is an anatomic dead zone?

Answer 10

structures of the

conducting zone that contains no alveoli

Question 11

what is hyperventilation?

Answer 11

An increase in pulmonary ventilation that exceeds
O2 needs of metabolism

decreases pressure of CO2

Question 12

what is dsypnea?

Answer 12

distress in breathing