ATI RN
Respiratory System Questions Questions
Question 1 of 5
Dalton's law states that
Correct Answer: D
Rationale: Dalton's law states that in a mixture of gases such as air, the total pressure exerted by the mixture of gases is equal to the sum of the partial pressures of each individual gas in the mixture. This means that each gas in a mixture behaves independently of the others. Therefore, choice D is correct as it directly reflects Dalton's law. Choices A, B, and C are incorrect because they do not accurately describe Dalton's law and its principle of partial pressures in gas mixtures.
Question 2 of 5
The leading cause of death for children under 1 year of age is
Correct Answer: D
Rationale: The correct answer is D: sudden infant death syndrome (SIDS). SIDS is the leading cause of death for children under 1 year old due to unexplained reasons, typically occurring during sleep. A: Motor vehicle accidents are more common in older children. B: Falls are also more common in toddlers who are more mobile. C: Cardiac congenital malformations are a significant cause of death but are not the leading cause in this age group.
Question 3 of 5
Which of the following is a common symptom of heart failure?
Correct Answer: B
Rationale: The correct answer is B: Persistent coughing. In heart failure, fluid may accumulate in the lungs, leading to a persistent cough. High blood pressure (A) is a risk factor for heart failure but not a symptom. Excessive weight loss (C) is not a typical symptom of heart failure; instead, patients may experience weight gain due to fluid retention. Increased energy levels (D) are unlikely in heart failure, as fatigue and weakness are common symptoms. Therefore, the most common symptom of heart failure among the choices given is persistent coughing.
Question 4 of 5
The amount of air normally inhaled or exhaled with one normal breath
Correct Answer: B
Rationale: The correct answer is B: Tidal volume. Tidal volume is the amount of air normally inhaled or exhaled with one normal breath. It represents the typical volume of air moved in and out of the lungs during normal breathing. The other choices are incorrect because: A) Expiratory reserve volume is the additional amount of air that can be exhaled after a normal exhalation; C) Residual volume is the volume of air remaining in the lungs after a maximum exhalation; D) Total lung capacity is the sum of all lung volumes, including tidal volume, inspiratory reserve volume, expiratory reserve volume, and residual volume.
Question 5 of 5
The anatomical position of hilum
Correct Answer: D
Rationale: The correct answer is D. The hilum is the region where blood vessels, nerves, and lymphatics enter and exit an organ. The anatomical position of the hilum can vary depending on the organ. For example, in the lungs, the hilum is located in the mediastinal surface between the lungs, around the level of the 6th to 7th thoracic vertebrae. Therefore, option D, "all of these," is correct because it encompasses the different anatomical positions of the hilum in various organs. Options A, B, and C are incorrect because they do not fully capture the diverse locations of the hilum in different anatomical contexts.