ATI RN
Questions for Respiratory System Questions
Question 1 of 5
Oxygen moves from alveoli to the bloodstream
Correct Answer: A
Rationale: The correct answer is A because oxygen moves from alveoli to the bloodstream by simple diffusion. This is due to the concentration gradient of oxygen being higher in the alveoli (where oxygen is inhaled) compared to the blood vessels surrounding the alveoli. Oxygen molecules move from an area of high concentration (alveoli) to an area of low concentration (bloodstream) to reach equilibrium. Choices B, C, and D are incorrect because the movement of oxygen in this context is primarily driven by passive diffusion, not by the activity of carbonic anhydrase, carbaminohemoglobin, or active transport.
Question 2 of 5
Volume of air left after maximum forceful expiration in human lung is
Correct Answer: B
Rationale: The correct answer is B: Residual volume. After maximum forceful expiration, residual volume is the volume of air left in the lungs to prevent lung collapse. Total lung capacity (A) is the maximum amount of air the lungs can hold. Vital capacity (C) is the maximum amount of air that can be exhaled after a maximum inhalation. Tidal volume (D) is the volume of air moved in and out of the lungs during normal breathing, not after a forceful expiration.
Question 3 of 5
In human beings the number of lobes in right and left lungs is
Correct Answer: C
Rationale: The correct answer is C: 3 and 2. The right lung has 3 lobes (upper, middle, lower), while the left lung has 2 lobes (upper and lower). This is due to the presence of the heart on the left side, occupying space that limits the left lung to 2 lobes. Option A is incorrect as the left lung has only 2 lobes. Option B is incorrect as both lungs have different numbers of lobes. Option D is incorrect as the right lung typically has 3 lobes, not 4.
Question 4 of 5
A nurse is assessing a client who has a tracheostomy. The nurse notes that the tracheostomy tube is pulsing with the heartbeat as the client's pulse is being taken. No other abnormal findings are noted. What action by the nurse is most appropriate?
Correct Answer: D
Rationale: The correct answer is D. 1. Pulsation of the tracheostomy tube with the heartbeat indicates a possible vascular anomaly or the tube being in contact with a major vessel. 2. Staying with the client ensures immediate monitoring and intervention if needed. 3. Having someone else call the primary health care provider promptly allows for timely assessment and intervention. 4. Options A, B, and C are incorrect. Option A is premature without assessing the client further. Option B is incorrect as pulsation is not a normal finding in tracheostomy tubes. Option C is unsafe and can lead to airway compromise.
Question 5 of 5
Which teaching point is most important for the client with a peritonsillar abscess?
Correct Answer: B
Rationale: The correct answer is B: Take all antibiotics as directed. This is the most important teaching point for a client with a peritonsillar abscess because antibiotics are crucial in treating the infection and preventing complications. Here's the rationale: 1. Antibiotics target the bacteria causing the abscess, helping to clear the infection. 2. Incomplete antibiotic course can lead to antibiotic resistance and recurrence of infection. 3. Not following antibiotic instructions can result in treatment failure and worsening of the abscess. 4. Gargling with warm salt water (choice A) may provide temporary relief but does not address the underlying infection. Liquid medications (choice C) and handwashing (choice D) are important but not as vital as completing the antibiotic course.