CHAPTER 11 EGAN’S ACTUAL EXAM PAPER
2026 QUESTIONS WITH SOLUTIONS GRADED
A+
◉ Ventilation Answer: The process of moving gas in and out of the
lungs.
◉ How is ventilation distinguished from respiration? Answer:
Respiration refers to the physiologic process of O2 use at the cellular
level.
◉ Two phases of ventilation: Answer: Inspiration and expiration.
◉ Tidal Volume (VT) Answer: The volume of gas that moves in and
out of the respiratory tract during inspiration and expiration.
◉ Oxygen is supplied based on what? Answer: To supply the
metabolic needs.
◉ Pressure gradient Answer: Used to understand the gas flow into
and out of the alveoli during breathing.
, ◉ Forces opposing lung inflation Answer: Elastic forces and
frictional forces.
◉ Elastic forces Answer: Involves the tissue of the lungs, thorax
(chest) and the surface tension in the alveoli.
◉ Frictional forces Answer: Involve resistance caused by gas flow
through the airways (natural and artificial) and tissue movement
during breathing. Ex. Lungs, rib cage, and abdomen.
◉ To ventilate the respiratory muscles have to overcome what
forces? Answer: Elastic and resistive forces
◉ How much pressure is needed to inflate a fluid filled lung?
Answer: Less Pressure is needed to inflate a fluid filled lung to a
given volume.
◉ What happens to the surface tension when there are weak
intramolecular attraction between surfactant at the surfaces.
Answer: Because of he weak intramolecular attraction between
surfactant molecules at the surfaces, the liquid lining the alveoli
exhibits much less surface tension than it would in the absence of
pulmonary surfactant.
2026 QUESTIONS WITH SOLUTIONS GRADED
A+
◉ Ventilation Answer: The process of moving gas in and out of the
lungs.
◉ How is ventilation distinguished from respiration? Answer:
Respiration refers to the physiologic process of O2 use at the cellular
level.
◉ Two phases of ventilation: Answer: Inspiration and expiration.
◉ Tidal Volume (VT) Answer: The volume of gas that moves in and
out of the respiratory tract during inspiration and expiration.
◉ Oxygen is supplied based on what? Answer: To supply the
metabolic needs.
◉ Pressure gradient Answer: Used to understand the gas flow into
and out of the alveoli during breathing.
, ◉ Forces opposing lung inflation Answer: Elastic forces and
frictional forces.
◉ Elastic forces Answer: Involves the tissue of the lungs, thorax
(chest) and the surface tension in the alveoli.
◉ Frictional forces Answer: Involve resistance caused by gas flow
through the airways (natural and artificial) and tissue movement
during breathing. Ex. Lungs, rib cage, and abdomen.
◉ To ventilate the respiratory muscles have to overcome what
forces? Answer: Elastic and resistive forces
◉ How much pressure is needed to inflate a fluid filled lung?
Answer: Less Pressure is needed to inflate a fluid filled lung to a
given volume.
◉ What happens to the surface tension when there are weak
intramolecular attraction between surfactant at the surfaces.
Answer: Because of he weak intramolecular attraction between
surfactant molecules at the surfaces, the liquid lining the alveoli
exhibits much less surface tension than it would in the absence of
pulmonary surfactant.
