PHYS 261 HUMAN PHYSIOLOGY MIDTERM
EXAM FINAL TEST PAPER 2026 FULL
QUESTIONS AND SOLUTIONS VERIFIED A+
◉ What chemical breaks the surface tension in the surface of lungs
to allow compliance and elastance?
a. Hormones
b. Surtacfant
c. Epinephrine
d. Cyanide
e. Surfactant Answer: e. Surfactant
◉ What happens to the pressure in alveoli during inspiration?
a. Increases.
b. Stays the same.
c. Decreases then sharply decreases.
d. Decreases
e. Pressure doesn't change. Answer: d. Decreases
◉ Describe Dalton's Law? Answer: The total pressure of a mixture of
gasses = The total partial pressures of the gasses individually.
,◉ What is alveolar ventilation? Answer: The amount of air reaching
alveoli per minute.
◉ If the doctor says that the pressure of the patient's alveoli is
increasing, what is probably happening with the patient's
respiration?
a. The patient is inhaling naturally.
b. The patient is hyper ventilating.
c. The patient is exhaling naturally.
d. The patient is holding his/her breath.
e. The patient has a hole in their lungs. Answer: c. The patient is
exhaling naturally.
◉ How to calculate the alveolar ventilation rate?
a. TV-DV
b. IRV-TLC
c. DV-IRV
d. ERV-IRV
e. Dalton's Law * TV/DV Answer: a. TV-DV (Total Volume - Dead
Space Volume)
◉ What is the difference between compliance and elastance?
Answer: Compliance = stretchable
, Elastance = ability to return to resting volume after compliance.
◉ What is the difference between high and low compliance?
Answer: High compliance = easy to stretch.
Low compliance = hard to stretch.
◉ What is the name of the test used to measure lung function by
measuring air volume inhalation, exhalation, and breathing rate?
a. Spirotechics
b. Speedometry
c. Spiralmetrics
d. Spirometry
e. Spirology Answer: Spirometry
◉ How to calculate total pulmonary ventilation?
a. Ventilation Rate x Spirometric Volume
b. Tidal Volume x Total Volume
c. Total Volume x Dalton's Law
d. Ventilation Rate x Tidal Volume
e. Ventialtion Rate x Resting Capacity Answer: d. Ventilation Rate x
Tidal Volume
EXAM FINAL TEST PAPER 2026 FULL
QUESTIONS AND SOLUTIONS VERIFIED A+
◉ What chemical breaks the surface tension in the surface of lungs
to allow compliance and elastance?
a. Hormones
b. Surtacfant
c. Epinephrine
d. Cyanide
e. Surfactant Answer: e. Surfactant
◉ What happens to the pressure in alveoli during inspiration?
a. Increases.
b. Stays the same.
c. Decreases then sharply decreases.
d. Decreases
e. Pressure doesn't change. Answer: d. Decreases
◉ Describe Dalton's Law? Answer: The total pressure of a mixture of
gasses = The total partial pressures of the gasses individually.
,◉ What is alveolar ventilation? Answer: The amount of air reaching
alveoli per minute.
◉ If the doctor says that the pressure of the patient's alveoli is
increasing, what is probably happening with the patient's
respiration?
a. The patient is inhaling naturally.
b. The patient is hyper ventilating.
c. The patient is exhaling naturally.
d. The patient is holding his/her breath.
e. The patient has a hole in their lungs. Answer: c. The patient is
exhaling naturally.
◉ How to calculate the alveolar ventilation rate?
a. TV-DV
b. IRV-TLC
c. DV-IRV
d. ERV-IRV
e. Dalton's Law * TV/DV Answer: a. TV-DV (Total Volume - Dead
Space Volume)
◉ What is the difference between compliance and elastance?
Answer: Compliance = stretchable
, Elastance = ability to return to resting volume after compliance.
◉ What is the difference between high and low compliance?
Answer: High compliance = easy to stretch.
Low compliance = hard to stretch.
◉ What is the name of the test used to measure lung function by
measuring air volume inhalation, exhalation, and breathing rate?
a. Spirotechics
b. Speedometry
c. Spiralmetrics
d. Spirometry
e. Spirology Answer: Spirometry
◉ How to calculate total pulmonary ventilation?
a. Ventilation Rate x Spirometric Volume
b. Tidal Volume x Total Volume
c. Total Volume x Dalton's Law
d. Ventilation Rate x Tidal Volume
e. Ventialtion Rate x Resting Capacity Answer: d. Ventilation Rate x
Tidal Volume
