ATI RN
NCLEX Questions for Respiratory System Questions
Question 1 of 5
How do microorganisms reach the lungs and cause pneumonia?
Correct Answer: A
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 2 of 5
Expiratory muscles contract at the time of
Correct Answer: C
Rationale: The correct answer is C: Forceful expiration. Expiratory muscles contract during forceful expiration to increase intra-abdominal pressure and expel air from the lungs effectively. During normal expiration, these muscles are relaxed. Choice A is incorrect because deep inspiration involves the contraction of inspiratory muscles, not expiratory muscles. Choice B is incorrect because normal inspiration does not involve expiratory muscles contraction. Choice D is incorrect because normal expiration does not require the forceful contraction of expiratory muscles.
Question 3 of 5
Methamoglobin is the oxidized form of Hemoglobin that cannot deliver oxygen and has a Bluish colour that imparts a Cyanotic hue to tissues. It appears when
Correct Answer: D
Rationale: The correct answer is D because both options A and B contribute to the formation of methemoglobin. In choice A, the genetic deficiency of glucose-6-phosphate dehydrogenase leads to an accumulation of oxidative stress in red blood cells, causing the conversion of hemoglobin to methemoglobin. In choice B, asphyxiation can also lead to the formation of methemoglobin due to the lack of oxygen, which causes the iron in hemoglobin to oxidize. Therefore, the correct answer is D as both scenarios can result in the appearance of methemoglobin. Choices C is incorrect as diving does not directly lead to the formation of methemoglobin.
Question 4 of 5
Opercular gills are found in
Correct Answer: D
Rationale: Opercular gills are found in both Lepidosteus and Polypterus, making choice D the correct answer. Lepidosteus, commonly known as the gar, and Polypterus, known as the bichir, are primitive fish species with opercular gills, which are a key feature in their respiratory system. Anabas, on the other hand, also known as the climbing perch, does not have opercular gills. Therefore, choices A, B, and C are incorrect as they do not possess opercular gills like Lepidosteus and Polypterus.
Question 5 of 5
A patient has a diagnosis of multiple sclerosis. The nurse is aware that neuromuscular disorders such as multiple sclerosis may lead to a decreased vital capacity. What does vital capacity measure?
Correct Answer: D
Rationale: The correct answer is D because vital capacity measures the maximal volume of air exhaled from the point of maximal inspiration. This measurement includes the tidal volume, inspiratory reserve volume, and expiratory reserve volume. A is incorrect because it describes tidal volume. B is incorrect because it describes total lung capacity. C is incorrect because it describes inspiratory capacity. Therefore, D is the most appropriate choice for measuring vital capacity accurately in a patient with neuromuscular disorders like multiple sclerosis.