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WorksheetsRespiratory System Quiz
Total questions: 20
Worksheet time: 10mins
What is airway resistance?
Resistance offered by alveoli
Resistance offered by nasal cavity
Resistance to airflow in respiratory passages
Resistance of blood in lungs
Resistance to airflow in respiratory passages
Which of the following increases airway resistance?
Bronchodilation
Sympathetic stimulation
Parasympathetic stimulation
Large airway diameter
Parasympathetic stimulation
Surfactant is secreted by which cells?
Type I pneumocytes
Type II pneumocytes
Alveolar macrophages
Ciliated epithelium
Type II pneumocytes
Main function of surfactant is to:
Increase surface tension
Reduce surface tension
Help in CO₂ exchange
Activate macrophages
Reduce surface tension
The absence of surfactant in newborns leads to:
Asthma
Bronchitis
Respiratory distress syndrome
Pulmonary edema
Respiratory distress syndrome
What is the main lipid component of surfactant?
Phosphatidylcholine
Lecithin
Sphingomyelin
Phosphatidylserine
Lecithin
Minute ventilation is defined as:
Tidal volume × Heart rate
Tidal volume × Respiratory rate
Residual volume × Respiratory rate
Vital capacity × Respiratory rate
Tidal volume × Respiratory rate
Which of the following is NOT a lung volume?
Tidal volume
Inspiratory reserve volume
Functional residual capacity
Vital capacity
Functional residual capacity
What is the average Tidal Volume in a healthy adult?
1000 mL
200 mL
500 mL
1500 mL
500 mL
The formula for Alveolar Ventilation is:
(TV - Dead space) × RR
TV × RR
IRV × RR
ERV × RR
(TV - Dead space) × RR
What is the normal V/Q ratio?
1.5
0.5
0.8
2.0
0.8
In pulmonary embolism, the V/Q ratio is:
Increased
Decreased
Normal
Unchanged
Increased
In airway obstruction, V/Q ratio is:
Increased
Decreased
Normal
Unchanged
Decreased
Which of the following conditions has increased V/Q mismatch?
Pneumonia
Pulmonary embolism
Asthma
All of the above
All of the above
Airflow in the respiratory system is governed by:
Fick's law
Boyle’s law
Ohm’s law
Dalton’s law
Ohm’s law
Asphyxia is defined as:
Excess CO₂ only
Deficiency of O₂ and excess CO₂
Deficiency of O₂ only
Normal gas exchange
Deficiency of O₂ and excess CO₂
Which of the following is **not** a stage of asphyxia?
Hypercapnic stage
Convulsive stage
Expulsive stage
Recovery stage
Recovery stage
Cheyne-Stokes respiration is characterized by:
Rapid deep breathing only
Alternating apnea and hyperpnea
Sudden cessation of breathing
Constant breathing
Alternating apnea and hyperpnea
Biot’s respiration is:
Rapid breathing followed by apnea
Gradual increase and decrease of breathing
Irregular breathing with variable depth
Regular shallow breathing
Irregular breathing with variable depth
Kussmaul’s breathing is typical of:
Asthma
Respiratory distress syndrome
Metabolic acidosis
Heart failure
Metabolic acidosis
