#1
Which organ is primarily responsible for gas exchange in the human body?
Lungs
ExplanationLungs facilitate the exchange of oxygen and carbon dioxide in the alveoli.
#2
What is the medical term for difficulty breathing?
Dyspnea
ExplanationDyspnea refers to labored or difficult breathing.
#3
What is the term for the process of air moving into and out of the lungs?
Ventilation
ExplanationVentilation refers to the inhalation and exhalation of air in the lungs.
#4
Which respiratory disorder is characterized by chronic inflammation and narrowing of the airways?
Asthma
ExplanationAsthma involves chronic inflammation and constriction of the airways.
#5
Which of the following is NOT a function of the respiratory system?
Storage of nutrients
ExplanationThe respiratory system is not involved in nutrient storage.
#6
What is the role of bicarbonate ions in acid-base balance?
To maintain pH in the blood
ExplanationBicarbonate ions help regulate and balance the pH of the blood.
#7
Which enzyme is responsible for converting carbon dioxide and water into carbonic acid in red blood cells?
Carbonic anhydrase
ExplanationCarbonic anhydrase catalyzes the conversion of CO2 and water to carbonic acid.
#8
Which of the following is NOT a component of the respiratory membrane where gas exchange occurs?
Bronchial smooth muscle
ExplanationBronchial smooth muscle is not part of the gas exchange membrane.
#9
Which condition is characterized by abnormally high levels of carbon dioxide in the blood?
Respiratory acidosis
ExplanationRespiratory acidosis results from elevated carbon dioxide levels in the bloodstream.