#1
Which organ is primarily responsible for gas exchange in the human respiratory system?
Lungs
ExplanationLungs facilitate gas exchange in the respiratory system.
#2
Which of the following is NOT a function of the respiratory system?
Regulation of blood pressure
ExplanationRespiratory system does not directly regulate blood pressure.
#3
What is the term for the process of gas exchange between the lungs and the blood?
Diffusion
ExplanationDiffusion allows gas exchange between lungs and blood.
#4
Which structure of the respiratory system is responsible for producing sound?
Larynx
ExplanationLarynx generates sound in the respiratory system.
#5
Which of the following is the primary function of the respiratory system?
Exchanging gases
ExplanationRespiratory system's primary function is gas exchange.
#6
What is the function of the epiglottis during swallowing?
To prevent food from entering the trachea
ExplanationEpiglottis blocks food from entering the windpipe during swallowing.
#7
Which of the following respiratory disorders is characterized by inflammation and narrowing of the airways, leading to difficulty breathing?
Asthma
ExplanationAsthma causes airway inflammation and constriction, resulting in breathing difficulties.
#8
What is the name of the structure that separates the nasal cavity from the oral cavity?
Palate
ExplanationPalate divides the nasal and oral cavities.
#9
Which of the following is a primary risk factor for developing chronic obstructive pulmonary disease (COPD)?
Smoking
ExplanationSmoking is a major risk factor for COPD.
#10
Which respiratory disorder is caused by a bacterial infection and is characterized by inflammation of the air sacs in the lungs?
Pneumonia
ExplanationPneumonia is caused by bacterial infection, leading to lung air sac inflammation.
#11
What is the role of surfactant in the lungs?
To increase surface tension and prevent collapse of alveoli
ExplanationSurfactant reduces surface tension, preventing alveolar collapse and aiding in breathing.
#12
Which respiratory parameter refers to the maximum volume of air that can be exhaled after a maximum inhalation?
Vital capacity
ExplanationVital capacity represents the maximum air volume exhaled after a full inhalation.
#13
What is the term for the tiny hair-like structures in the respiratory tract that help to sweep mucus and debris out of the airways?
Cilia
ExplanationCilia are hair-like structures aiding in the removal of mucus and debris.
#14
Which of the following respiratory disorders is characterized by the progressive destruction of the air sacs in the lungs?
Emphysema
ExplanationEmphysema leads to the gradual destruction of lung air sacs.
#15
Which of the following is a common symptom of acute bronchitis?
Persistent cough
ExplanationAcute bronchitis often presents with a persistent cough.