#1
Which organ is primarily responsible for gas exchange in the respiratory system?
Lungs
ExplanationLungs facilitate gas exchange between air and blood.
#2
What is the medical term for the windpipe?
Trachea
ExplanationThe trachea carries air to and from the lungs.
#3
Which gas is the most abundant in the Earth's atmosphere?
Nitrogen
ExplanationNitrogen constitutes approximately 78% of the Earth's atmosphere.
#4
What is the medical term for difficulty in breathing?
Dyspnea
ExplanationDyspnea refers to labored or difficult breathing.
#5
Which respiratory disorder is characterized by inflammation and narrowing of the airways, leading to coughing, wheezing, and shortness of breath?
Asthma
ExplanationAsthma involves chronic airway inflammation and bronchial constriction.
#6
What is the main function of surfactant in the lungs?
To prevent alveolar collapse
ExplanationSurfactant reduces surface tension, preventing alveoli from collapsing.
#7
Which of the following is NOT a symptom of hypoxia?
Hypotension
ExplanationHypotension refers to low blood pressure, not oxygen deficiency.
#8
What is the flow rate for administering emergency oxygen to a non-breathing adult?
8 liters per minute
Explanation8 liters per minute ensures adequate oxygen supply in emergencies.
#9
Which of the following is NOT a function of the respiratory system?
Transport of nutrients
ExplanationThe respiratory system is not responsible for nutrient transport.
#10
What is the term for a sudden, severe episode of difficulty in breathing, often caused by constriction of the airways?
Asthma attack
ExplanationAsthma attacks result from airway inflammation and constriction.
#11
Which of the following respiratory muscles contracts during inspiration?
Diaphragm
ExplanationThe diaphragm contracts, expanding the thoracic cavity during inspiration.
#12
What is the term for the exchange of gases between the blood and body tissues?
Internal respiration
ExplanationInternal respiration involves gas exchange at the cellular level.
#13
What is the appropriate position for administering emergency oxygen to an unconscious person?
Left lateral recumbent position
ExplanationThis position aids in maintaining airway patency during oxygen administration.
#14
Which of the following is a potential complication of oxygen therapy?
Hypercapnia
ExplanationExcessive oxygen can lead to carbon dioxide retention (hypercapnia).
#15
Which of the following conditions is characterized by the collapse of part or all of a lung?
Pneumothorax
ExplanationPneumothorax involves the presence of air in the pleural space, leading to lung collapse.
#16
What is the term for the process of expelling air from the lungs?
Expiration
ExplanationExpiration involves the passive release of air from the lungs.
#17
Which of the following conditions is characterized by the presence of excess fluid in the lungs?
Pulmonary edema
ExplanationPulmonary edema results from fluid accumulation in lung tissue and air spaces.