1) Describe the structure of the respiratory membrane.
2) During contraction of the diaphragm:
a. in what direction does the diaphragm move?
b. what does this movement do to the volume of the lungs?
3) Put the following respiratory events in the correctorder:
a. air moves, b. alveolar volume changes, c. pleural pressurechanges, d. alveolar pressure changes.
4) Describe what would happen to a lung if the pleural cavitypressure became equal to atmospheric pressure.
5) State what would happen to each of the following as a resultof lung fibrosis (increase, decrease, or no change):
a. lung compliance
b. alveolar surface tension
c. airway resistance
d. tidal volume
6) State what happens to the following as altitude increases(increase, decrease, or no change):
a. atmospheric pressure
b. % of air made of oxygen
c. partial pressure of oxygen
7) When oxygen is in a state of partial pressure equilibriumbetween the alveoli and pulmonary capillaries, state: (lower than,higher than, or equal to)
a. how alveolar and capillary PO2 compare.
b. how the alveolar and capillary concentrations of O2compare.
