ATI LPN
Assessment of Hematologic System NCLEX Questions Questions
Question 1 of 5
Wilson's disease can cause liver problems
Correct Answer: A
Rationale: Step-by-step rationale: 1. Wilson's disease is a genetic disorder that causes copper to accumulate in the liver. 2. The excess copper can lead to liver damage and various liver problems. 3. Therefore, it is true that Wilson's disease can cause liver problems. Summary: B: False - Incorrect, as Wilson's disease does cause liver problems. C: Sometimes - Incorrect, as Wilson's disease consistently leads to liver problems. D: Only in children - Incorrect, as Wilson's disease can affect individuals of all ages, not just children.
Question 2 of 5
Chronic Lymphocytic Leukemia is characterized by peripheral blood and bone marrow
Correct Answer: B
Rationale: The correct answer is B: Lymphocytosis. Chronic Lymphocytic Leukemia is characterized by an increased number of mature lymphocytes in the peripheral blood and bone marrow, leading to lymphocytosis. Lymphocytopenia (choice A) is the opposite of lymphocytosis and is not typical in CLL. Neutropenia (choice C) refers to a low level of neutrophils, which is not a characteristic finding in CLL. Thrombocytosis (choice D) is an increased number of platelets, which is not a defining feature of CLL.
Question 3 of 5
At which month of fetal development does the bone marrow become the primary site of hematopoiesis?
Correct Answer: C
Rationale: The correct answer is C, the end of the 6th month. By this time, the bone marrow becomes the primary site of hematopoiesis in fetal development. This is because around this stage, the bones have developed enough to support the production of blood cells. Prior to the end of the 6th month, hematopoiesis mainly occurs in the liver and spleen. Choices A, B, and D are incorrect because by the 2nd, 5th, and end of 7th month respectively, the liver and spleen are still the main sites of hematopoiesis in fetal development.
Question 4 of 5
Which single feature of normal RBCs is most responsible for limiting their life span?
Correct Answer: D
Rationale: The correct answer is D: Loss of nucleus. The absence of a nucleus in red blood cells (RBCs) limits their ability to repair and regenerate, leading to a shorter lifespan. Without a nucleus, RBCs cannot synthesize new proteins or repair damaged DNA, making them more susceptible to wear and tear. The other choices are incorrect because: A: Loss of mitochondria - RBCs naturally lack mitochondria to make space for more hemoglobin, but this feature does not significantly impact their lifespan. B: Increased flexibility of the cell membrane - While flexibility is important for RBCs to navigate through narrow capillaries, it does not directly affect their lifespan. C: Reduction of Hb iron - While iron is crucial for hemoglobin function, a reduction in Hb iron does not directly limit the lifespan of RBCs.
Question 5 of 5
What is the distribution of normal Hb in adults?
Correct Answer: B
Rationale: The correct answer is B (>95% Hb A, <3.5% Hb A2, <1-2% Hb F). In adults, the normal distribution of hemoglobin includes mainly Hb A (>95%), a small percentage of Hb A2 (<3.5%), and an even smaller percentage of Hb F (<1-2%). This distribution is typical in healthy individuals and represents the normal composition of adult hemoglobin. Choice A (80-90% Hb A, 5-10% Hb A2, 1-5% Hb F) and Choice C (90-95% Hb A, 3-5% Hb A2, 1-3% Hb F) are incorrect because they do not reflect the accurate distribution percentages of Hb A, Hb A2, and Hb F in adults. Choice D (85-90% Hb A, 5-7% H