ATI RN
Questions of Respiratory System Questions
Question 1 of 5
Which of the following Hormone is secreted in excess when a person climbing a mountain
Correct Answer: C
Rationale: The correct answer is C: Erythropoietin. When climbing a mountain, the body experiences reduced oxygen levels, triggering the release of erythropoietin to stimulate red blood cell production and improve oxygen delivery. This helps counteract the effects of high altitude. Explanation of other choices: A: Anti Natriuretic Factor - This hormone regulates sodium and water balance in the body, not directly related to climbing a mountain. B: Adrenaline - Released in response to stress or danger, not specifically related to climbing a mountain. D: Thyroxine - Regulates metabolism and energy levels, not directly related to the physiological response to climbing a mountain.
Question 2 of 5
The nurse is performing a respiratory assessment of an adult patient and is attempting to distinguish between vesicular, bronchovesicular, and bronchial (tubular) breath sounds. The nurse should distinguish between these normal breath sounds on what basis?
Correct Answer: A
Rationale: The correct answer is A because vesicular, bronchovesicular, and bronchial breath sounds are distinguished based on their location over specific areas of the lung. Vesicular sounds are soft and low-pitched and are heard over most of the lung fields, bronchovesicular sounds are intermediate in pitch and are heard over the major bronchi, and bronchial sounds are loud and high-pitched and are heard over the trachea and larynx. Choices B, C, and D are incorrect as the distinction between these breath sounds is not based on volume, inspiration or expiration, or continuity of the sounds.
Question 3 of 5
A class of immunoglobulins found concentrated in breast milk, and thus serve to passively and naturally enhance the specific immune system of a newborn is:
Correct Answer: A
Rationale: Step 1: IgA is the correct answer. It is found in breast milk and provides passive immunity to newborns through breastfeeding. Step 2: IgD is mainly found on the surface of B cells and is involved in the activation of B cells. Step 3: IgE is involved in allergic responses and parasitic infections, not typically found in high concentrations in breast milk. Step 4: IgG is the most abundant immunoglobulin in the bloodstream but is not typically concentrated in breast milk like IgA. Summary: IgA is the correct answer because it is specifically designed to provide passive immunity to newborns through breast milk, while the other choices do not serve this function.
Question 4 of 5
The partial pressure of oxygen in arterial blood is approximately
Correct Answer: B
Rationale: The correct answer is B: 100 mm Hg. In arterial blood, the partial pressure of oxygen is typically around 100 mm Hg due to the oxygen-rich environment in the lungs. This value represents the pressure exerted by oxygen molecules in the blood. Choices A, C, and D are incorrect because they do not align with the normal range of oxygen partial pressure in arterial blood, which is around 100 mm Hg. Option A is too low, option C is slightly below the normal range, and option D is slightly above the normal range. Therefore, B is the most accurate representation of the typical partial pressure of oxygen in arterial blood.
Question 5 of 5
Hemoglobin's affinity for oxygen when the BPG level is high is
Correct Answer: B
Rationale: The correct answer is B: less than hemoglobin's affinity for oxygen when the BPG level is low. When the 2,3-bisphosphoglycerate (BPG) level is high, it binds to hemoglobin and decreases its affinity for oxygen. This results in easier unloading of oxygen to tissues. In contrast, when the BPG level is low, hemoglobin's affinity for oxygen is higher, making it harder to release oxygen to tissues. Choices A and C are incorrect because high BPG levels decrease hemoglobin's affinity for oxygen, making it less than when BPG levels are low. Choice D is incorrect because pH levels do not directly affect hemoglobin's affinity for oxygen in the context of this question.