ATI MEDICAL-SURGICAL NURSING — RESPIRATORY SYSTEM COMPREHENSIVE TEST BANK
UPDATED EDITION | NGN QUESTIONS WITH VERIFIED RATIONALIZED ANSWERS
1,050 PRACTICE QUESTIONS WITH DETAILED RATIONALES
ALL RESPIRATORY CHAPTERS AND TOPICS COVERED
================================================================================
COURSE: ATI Medical-Surgical Nursing — Respiratory
FORMAT: Multiple Choice, Select All That Apply (SATA), NGN Questions
COVERAGE: All Respiratory System Topics
LANGUAGE: English
================================================================================
CHAPTER 1: RESPIRATORY ANATOMY AND PHYSIOLOGY
Questions 1–60
================================================================================
QUESTION 001
The primary function of the respiratory system is to:
A) Regulate body temperature
B) Exchange oxygen and carbon dioxide between the atmosphere and the blood
C) Produce red blood cells
D) Regulate blood pressure
Answer: B
Explanation: The primary function of the respiratory system is gas exchange—delivering oxygen to the
blood and removing carbon dioxide from the body. This occurs in the alveoli through diffusion.
QUESTION 002
Which structure is known as the "voice box"?
,A) Pharynx
B) Larynx
C) Trachea
D) Epiglottis
Answer: B
Explanation: The larynx, or voice box, is located between the pharynx and trachea and contains the
vocal cords. It also protects the lower airway during swallowing.
QUESTION 003
The epiglottis functions to:
A) Warm and humidify air
B) Prevent food and liquid from entering the trachea during swallowing
C) Produce mucus
D) Filter particles from inhaled air
Answer: B
Explanation: The epiglottis is a cartilaginous flap that covers the opening of the larynx during swallowing,
preventing aspiration of food and liquids into the trachea.
QUESTION 004
Which cells produce surfactant in the lungs?
A) Type I alveolar cells
B) Type II alveolar cells
C) Alveolar macrophages
D) Ciliated epithelial cells
Answer: B
Explanation: Type II alveolar cells produce surfactant, which reduces surface tension in the alveoli,
preventing alveolar collapse during exhalation.
,QUESTION 005
The primary muscle of respiration is the:
A) Diaphragm
B) External intercostal muscles
C) Sternocleidomastoid
D) Abdominal muscles
Answer: A
Explanation: The diaphragm is the primary muscle of inspiration. When it contracts, it flattens and
moves downward, increasing thoracic volume and creating negative pressure that draws air into the
lungs.
QUESTION 006
Which of the following is NOT a function of the upper respiratory tract?
A) Warming inhaled air
B) Humidifying inhaled air
C) Gas exchange
D) Filtering inhaled particles
Answer: C
Explanation: Gas exchange occurs in the alveoli of the lower respiratory tract. The upper respiratory
tract (nose, pharynx, larynx) warms, humidifies, and filters inhaled air.
QUESTION 007
The carina is located at the:
A) Point where the trachea bifurcates into the right and left mainstem bronchi
B) Entrance to the larynx
C) Base of the lungs
D) Junction of the nasopharynx and oropharynx
, Answer: A
Explanation: The carina is the ridge at the lower end of the trachea where it divides into the right and
left mainstem bronchi. It is a highly sensitive area that triggers the cough reflex.
QUESTION 008
How many lobes does the right lung have?
A) One
B) Two
C) Three
D) Four
Answer: C
Explanation: The right lung has three lobes (upper, middle, and lower), while the left lung has two lobes
(upper and lower). The right lung is larger but shorter due to the liver's position below the diaphragm.
QUESTION 009
The pleural space is:
A) The area between the lungs
B) The potential space between the visceral and parietal pleura
C) The space inside the alveoli
D) The area between the ribs
Answer: B
Explanation: The pleural space is the potential space between the visceral pleura (covering the lungs)
and the parietal pleura (lining the thoracic cavity). It contains a small amount of lubricating fluid.
QUESTION 010
Negative pressure in the pleural space is essential for:
A) Gas exchange
UPDATED EDITION | NGN QUESTIONS WITH VERIFIED RATIONALIZED ANSWERS
1,050 PRACTICE QUESTIONS WITH DETAILED RATIONALES
ALL RESPIRATORY CHAPTERS AND TOPICS COVERED
================================================================================
COURSE: ATI Medical-Surgical Nursing — Respiratory
FORMAT: Multiple Choice, Select All That Apply (SATA), NGN Questions
COVERAGE: All Respiratory System Topics
LANGUAGE: English
================================================================================
CHAPTER 1: RESPIRATORY ANATOMY AND PHYSIOLOGY
Questions 1–60
================================================================================
QUESTION 001
The primary function of the respiratory system is to:
A) Regulate body temperature
B) Exchange oxygen and carbon dioxide between the atmosphere and the blood
C) Produce red blood cells
D) Regulate blood pressure
Answer: B
Explanation: The primary function of the respiratory system is gas exchange—delivering oxygen to the
blood and removing carbon dioxide from the body. This occurs in the alveoli through diffusion.
QUESTION 002
Which structure is known as the "voice box"?
,A) Pharynx
B) Larynx
C) Trachea
D) Epiglottis
Answer: B
Explanation: The larynx, or voice box, is located between the pharynx and trachea and contains the
vocal cords. It also protects the lower airway during swallowing.
QUESTION 003
The epiglottis functions to:
A) Warm and humidify air
B) Prevent food and liquid from entering the trachea during swallowing
C) Produce mucus
D) Filter particles from inhaled air
Answer: B
Explanation: The epiglottis is a cartilaginous flap that covers the opening of the larynx during swallowing,
preventing aspiration of food and liquids into the trachea.
QUESTION 004
Which cells produce surfactant in the lungs?
A) Type I alveolar cells
B) Type II alveolar cells
C) Alveolar macrophages
D) Ciliated epithelial cells
Answer: B
Explanation: Type II alveolar cells produce surfactant, which reduces surface tension in the alveoli,
preventing alveolar collapse during exhalation.
,QUESTION 005
The primary muscle of respiration is the:
A) Diaphragm
B) External intercostal muscles
C) Sternocleidomastoid
D) Abdominal muscles
Answer: A
Explanation: The diaphragm is the primary muscle of inspiration. When it contracts, it flattens and
moves downward, increasing thoracic volume and creating negative pressure that draws air into the
lungs.
QUESTION 006
Which of the following is NOT a function of the upper respiratory tract?
A) Warming inhaled air
B) Humidifying inhaled air
C) Gas exchange
D) Filtering inhaled particles
Answer: C
Explanation: Gas exchange occurs in the alveoli of the lower respiratory tract. The upper respiratory
tract (nose, pharynx, larynx) warms, humidifies, and filters inhaled air.
QUESTION 007
The carina is located at the:
A) Point where the trachea bifurcates into the right and left mainstem bronchi
B) Entrance to the larynx
C) Base of the lungs
D) Junction of the nasopharynx and oropharynx
, Answer: A
Explanation: The carina is the ridge at the lower end of the trachea where it divides into the right and
left mainstem bronchi. It is a highly sensitive area that triggers the cough reflex.
QUESTION 008
How many lobes does the right lung have?
A) One
B) Two
C) Three
D) Four
Answer: C
Explanation: The right lung has three lobes (upper, middle, and lower), while the left lung has two lobes
(upper and lower). The right lung is larger but shorter due to the liver's position below the diaphragm.
QUESTION 009
The pleural space is:
A) The area between the lungs
B) The potential space between the visceral and parietal pleura
C) The space inside the alveoli
D) The area between the ribs
Answer: B
Explanation: The pleural space is the potential space between the visceral pleura (covering the lungs)
and the parietal pleura (lining the thoracic cavity). It contains a small amount of lubricating fluid.
QUESTION 010
Negative pressure in the pleural space is essential for:
A) Gas exchange
