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WorksheetsRespiratory Physiology Quiz
Total questions: 15
Worksheet time: 8mins
What is the tidal volume (VT)?
The volume that can be inspired over the tidal volume
The volume remaining in the lungs after maximal expiration
The volume inspired or expired with each normal breath
The volume that can be expired after a tidal volume
Which lung volume cannot be measured by spirometry?
Expiratory reserve volume (ERV)
Residual volume (RV)
Inspiratory reserve volume (IRV)
Tidal volume (VT)
What is the equation for calculating physiologic dead space (VD)?
VD = VT × (PaCO2 - PeCO2)
VD = VT × (PaCO2 + PeCO2)
VD = VT × (PeCO2 / PaCO2)
VD = VT × (PaCO2 / PeCO2)
What is the functional residual capacity (FRC)?
The sum of expiratory reserve volume and residual volume
The volume remaining in the lungs after a tidal volume is expired
The total volume in the lungs after maximal inspiration
The sum of tidal volume and inspiratory reserve volume
In obstructive lung disease, what happens to FEV1/FVC ratio?
It remains the same
It decreases
It increases
It becomes zero
What is the primary muscle for inspiration?
Internal intercostals
Abdominal muscles
Diaphragm
External intercostals
What does compliance of the respiratory system describe?
The ability to resist airflow
The change in volume for a given change in pressure
The total lung capacity
The volume of air that can be forcibly expired
What is the effect of surfactant on alveoli?
Prevents small alveoli from collapsing
Increases surface tension
Decreases compliance
Increases collapsing pressure
What is the primary site of airway resistance?
Smallest airways
Medium-sized bronchi
Trachea
Alveoli
What happens to intrapleural pressure during inspiration?
It increases to atmospheric pressure
It becomes positive
It becomes more negative
It remains the same
What is the primary form of oxygen transport in blood?
As carbon dioxide
In the form of bicarbonate
Bound to hemoglobin
Dissolved in plasma
What is the effect of high lung volumes on airway resistance?
Causes airway collapse
Increases airway resistance
Has no effect
Decreases airway resistance
What is the primary characteristic of restrictive lung disease?
Increased FEV1/FVC ratio
Decreased lung compliance
Increased lung compliance
Air trapping
What is the relationship between pressure, airflow, and resistance?
Resistance is independent of airflow
Airflow is inversely proportional to pressure
Airflow is directly proportional to resistance
Airflow is directly proportional to pressure difference
What is the role of 2,3-diphosphoglycerate (DPG) in hemoglobin?
Increases oxygen affinity
Decreases oxygen affinity
Has no effect on hemoglobin
Increases carbon dioxide binding
