#1
Which structure prevents food from entering the trachea during swallowing?
Epiglottis
ExplanationFlap of tissue covering the trachea during swallowing
#2
What is the main function of the respiratory system?
Transporting oxygen to cells
ExplanationDelivering oxygen to body cells and removing carbon dioxide
#3
Which of the following is not a component of the lower respiratory tract?
Pharynx
ExplanationPart of the upper respiratory tract involved in both swallowing and breathing
#4
What is the term for the tiny air sacs where gas exchange occurs in the lungs?
Alveoli
ExplanationSite of oxygen and carbon dioxide exchange in the lungs
#5
Which of the following is a function of the mucociliary escalator in the respiratory system?
Moving mucus and trapped particles towards the throat
ExplanationClearing the airway of debris and pathogens
#6
What is the term for the medical procedure used to establish an airway in patients with severe airway obstruction or respiratory failure?
Endotracheal intubation
ExplanationInserting a tube into the trachea to maintain an open airway
#7
Which of the following is not a function of the nasal cavity?
Producing digestive enzymes
ExplanationNasal cavity primarily for warming, moistening, and filtering air
#8
What is the medical term for difficulty breathing?
Dyspnea
ExplanationDifficulty or labored breathing
#9
Which muscle is primarily responsible for inspiration during quiet breathing?
Diaphragm
ExplanationMuscle separating the thoracic and abdominal cavities, contracts during inhalation
#10
What is the term for the inflammation of the bronchial tubes?
Bronchitis
ExplanationInflammation causing coughing and mucus production
#11
Which of the following conditions is characterized by the collapse of alveoli, leading to impaired gas exchange?
Atelectasis
ExplanationPartial or complete collapse of lung tissue
#12
What is the primary goal of positive pressure ventilation during cardiopulmonary resuscitation (CPR)?
To inflate the lungs
ExplanationForcing air into the lungs to maintain oxygenation
#13
Which of the following is not a primary function of the larynx?
Gas exchange
ExplanationVoice production and protecting the airway
#14
Which of the following is a common symptom of obstructive sleep apnea?
Hypertension
ExplanationHigh blood pressure due to disrupted sleep patterns
#15
Which of the following respiratory diseases is characterized by irreversible airflow obstruction and destruction of lung tissue?
Chronic obstructive pulmonary disease (COPD)
ExplanationCommon lung disease causing breathing difficulties
#16
Which of the following is not a symptom of acute respiratory distress syndrome (ARDS)?
Hypercapnia
ExplanationHigh levels of carbon dioxide in the blood
#17
What is the term for the surgical procedure that involves the removal of one lung?
Pneumonectomy
ExplanationSurgical removal of a lung due to disease or trauma