Respiratory Anatomy and Physiology

Question 1

Factors Affecting The Rate of Diffusion

Answer 1

1. Pressure gradient
2. Solubility coefficient
3. Membrane permeability
4. Distance
5. Surface Area

Question 2

How much is the Pulmonary Artery Pressure

Answer 2

Approx. 15mmHg

Question 3

Alveolar Cells and function

Answer 3

Type 1 - Form walls of alveoli and through which diffusion takes place
Type 2 - Secrete surfactant and replicate in case of alveolar damage

Question 4

Define Lung Compliance

Answer 4

The ease at which the lungs expand when a pressure is applied

C(L) = ▲V (ml) / ▲P (cmH2O)

Question 5

Define Lung Elasticity

Answer 5

Resistance to stretch; opposite of compliance

Question 6

Alveolar Gas Equation

Answer 6

PAO2 = PiO2 - PaCO2/0.8