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WCU - PHYS 261 FINAL EXAM LATEST ANSWERS 2024
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WCU - PHYS 261 FINAL EXAM LATEST ANSWERS 2024
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WCU - PHYS 261 FINAL EXAM LATEST ANSWERS2024
Name all the parts of the lower respiratory tract? - 1. *Trachea - some would argue it is.
2. Bronchus
3. Bronchioles
4. Lungs
5. Alveoli
6. Diaphragm
Name at least three functions of respiratory system? - a. Homeostatic regulation of body pH.
b. Assist in vocalization.
c. Assist in smelling.
d. Air filtration.
e. Air ventilation.
How to calculate Vital Capacity?
a. IRV + TV + ERV
b. RV + VC + TV
c. TLC + HGTV + CNN
d. ERV + IRV
e. I know it, I just don't want to tell you. - a. IRV + TV + ERV
What is the leftover air capacity after expelling ERV?
a. Total Lung Capacity (TLC)
b. Expiratory Reserve Volume (ERV)
c. Tidal Volume (TV)
d. Residual Volume (RV)
e. Vital Capacity (VC) - d. Residual Volume (RV)
What is described as the lung volume during normal breathing?
a. Total Lung Capacity (TLC)
b. Vital Capacity (VC)
c. Tidal Volume (TV)
d. Expiratory Reserve Volume (ERV)
e. Resting Capacity - c. Tidal Volume (TV)
How to calculate total lung capacity?
a. IRV + TV + ERV + RV
b. IRV + TV + ERV
c. IRV + TV + RV
d. TV + ERV + RV
e. IRV + TV + CRV + RV - a. IRV + TV + ERV + RV
Describe what happens during gas exchange 1? - When the body inhales the air from the
atmosphere in to the lungs AKA ventilation.
,What is the complete sum of the air volume of the lungs?
a. Total Lung Capacity (TLC)
b. Vital Capacity (VC)
c. Tidal Volume (TV)
d. Expiratory Reserve Volume (ERV)
e. Resting Capacity - a. Total Lung Capacity (TLC)
What chemical "breaks" the surface tension in the surface of the lungs to allow compliance and
elastance? - Surfactant
Which part of the respiratory system produces surfactants?
a. Alveoli Type 1
b. Lungs
c. Brochioles
d. Alveoli Type II
e. Capillaries Type II - d. Alveoli Type II
Describe Boyle's Law? - As volume increases, pressure decreases.
As volume decreases, pressure increases.
Which part of the respiratory system does 95% of the gas exchange function?
a. Alveoli Type 1
b. Lungs
c. Brochioles
d. Alveoli Type II
e. Capillaries Type II - a. Alveoli Type 1
Which of the following is NOT a function of the respiratory system?
a. Assist in smelling.
b. Ventilation
c. Air Filtration
b. Perfusion
d. Assist in speech
e. Homeostatic regulation of body pH. - b. Perfusion
What is the term describing inhaled air after normal inspiration?
a. Tidal Volume (TV)
b. Expiratory Reserve Volume (ERV)
c. Inspiratory Reserve Volume (IRV)
d. Residual Volume (RV)
e. Vital Capacity (VC) - c. Inspiratory Reserve Volume (IRV)
What is gas exchange 2?
a. The exchange of gasses through alveoli.
b. The exchange of gasses through cells.
c. During ventilation.
d. The exchange of gasses through flatulence.
e. The exchange of gasses through perspiration. - a. The exchange of gasses through alveoli.
, The exchange of gasses during cellular respiration is known as which of the following?
a. Gas exchange 1
b. Gas exchange 2
c. Gas exchange 3
d. Gas exchange 4
e. Gas exchange 5 - c. Gas exchange 3
What creates natural pressure gradients in the body?
a. Lungs
b. Neurons
c. Muscles
d. Heart
e. Red Blood Cells - c. Muscles
What is bulk flow?
a. Air flow from the head to the feet.
b. Blood pressure.
c. Air flow from regions of high to low pressure.
d. The natural movement of lipids.
e. Resistance of air from low to high pressure. - c. Air flow from regions of high to low pressure.
Describe the air pathway starting from the external environment. - Nose/Mouth > pharynx >
larynx > trachea > bronchus > bronchioles > alveoli
Which part of the respiratory system has 3 lobes, a horizontal fissure, and an oblique fissure?
a. Right Lung
b. Left Lung
c. Alveoli
d. Bronchus
e. Diaphragm - a. Right Lung
Name all the parts of the upper respiratory tract? - 1. Nasal Cavity (Nose/Mouth)
2. Pharynx
3. Larynx
4. *Trachea - some would argue it is.
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 - e. Surfactant
What happens to the pressure in alveoli during inspiration?
a. Increases.
b. Stays the same.
c. Decreases then sharply decreases.
d. Decreases
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