Platelets are cell fragments that are released by what type of cell?
Megakaryocytes
Macrophages
Monoblasts
Reticulocytes
The Correct Answer is A
A. Megakaryocytes: Megakaryocytes are large bone marrow cells whose cytoplasmic fragments become platelets (thrombocytes).
B. Macrophages: Phagocytic cells derived from monocytes; they do not produce platelets.
C. Monoblasts: Immature precursors that develop into monocytes/macrophages, not platelets.
D. Reticulocytes: Immature red blood cells (RBC precursors) released from bone marrow—not a source of platelets.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Radial artery on the wrist: Most commonly palpated peripheral pulse site.
B. Internal jugular vein in the neck: Venous pulsations are observed, not palpated as an arterial pulse.
C. Aorta in the chest: Not a routine palpable site.
D. Subclavian artery in the neck: Deep and not a common palpation site.
Correct Answer is {"dropdown-group-1":"A"}
Explanation
Correct answer: Right lung
The right lung occupies the right side of the thoracic cavity, is typically larger and divided into three lobes (superior, middle, inferior), and in the image the circled pulmonary tissue on the subject’s right side corresponds to the right lung.
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