Unit 2: Blood Cells - Practice Quiz

1 Which blood cell is normally the most numerous in a stained blood smear?

2 What is the typical shape of a normal erythrocyte?

3 Which feature is normally absent in a mature human erythrocyte?

4 Which blood cell is generally the largest normal leukocyte?

5 Which leukocyte has a multilobed nucleus and fine, pale granules?

6 Which leukocyte typically has a bilobed nucleus and prominent red-orange granules?

7 Which leukocyte contains large, dark blue-purple granules that may obscure the nucleus?

8 What is a typical nuclear shape of a normal monocyte?

9 Which leukocyte is usually small and has a large round nucleus with a thin rim of cytoplasm?

10 Which formed element is a small cell fragment rather than a complete cell?

11 How do platelets usually appear in a stained blood smear?

12 Which blood cell contains hemoglobin and transports oxygen?

13 Which group of blood cells contains a visible nucleus in a normal stained smear?

14 Which leukocyte is identified by abundant pale cytoplasm and a folded nucleus?

15 What is the usual color of erythrocytes in a Wright-stained blood smear?

16 Which leukocyte usually has a nucleus with two distinct lobes?

17 Which leukocyte usually has the darkest and most heavily stained granules?

18 What is the main purpose of staining a blood smear before examining cell morphology?

19 Which cell is usually about the same size as, or slightly larger than, an erythrocyte and has a dense round nucleus?

20 Which characteristic helps identify a neutrophil in a blood smear?

21 A peripheral blood smear shows cells that are approximately 7–8 µm in diameter, lack nuclei, and have a pale central area. Which cell type is being observed?

22 A leukocyte has a multilobed nucleus and fine, pale granules that are difficult to distinguish. Which cell is most likely present?

23 Which morphological feature best distinguishes an eosinophil from a neutrophil in a stained blood smear?

24 A very large white blood cell has abundant gray-blue cytoplasm, an irregular or kidney-shaped nucleus, and occasional vacuoles. What is its identity?

25 A small leukocyte has a large, round, dark-staining nucleus with only a thin rim of blue cytoplasm. Which cell is most consistent with this description?

26 Which cell would be identified by coarse, dark blue-purple granules that may partially obscure an S-shaped or bilobed nucleus?

27 Several red blood cells appear smaller than normal and have an unusually large central pallor. Which morphological term best describes this finding?

28 A smear contains red blood cells with substantial variation in size. Which term describes this observation?

29 A blood film shows red blood cells with many different shapes, including teardrop and target forms. Which term should be recorded?

30 Red blood cells are arranged in linear stacks resembling coins. Which smear finding is being observed?

31 A stained smear shows red blood cells containing small, evenly distributed blue granules. Which structure is most likely responsible for this appearance?

32 Which red blood cell shape is most strongly associated with a cell that has a crescent or elongated curved appearance?

33 A blood smear contains fragmented red blood cells with irregular, helmet-like shapes. Which term is appropriate?

34 A red blood cell is nearly spherical and lacks the normal zone of central pallor. Which cell is being described?

35 A red blood cell has a bull's-eye appearance, with a central stained area surrounded by pallor and an outer rim of hemoglobin. What is this cell called?

36 A smear shows slightly larger red blood cells with a bluish-gray tint compared with mature erythrocytes. What does this appearance most likely indicate?

37 A blood film contains numerous small, purple, non-nucleated fragments that are much smaller than erythrocytes. Which structures are these?

38 A leukocyte is about twice the diameter of an erythrocyte and has a bilobed nucleus with numerous large red-orange granules. Which identification is most accurate?

39 When estimating red blood cell morphology, which feature should be assessed together with cell size and shape?

40 A white blood cell has abundant cytoplasm and a nucleus that occupies most of the cell, but its cytoplasm contains several coarse azurophilic granules. Which identification is most appropriate?

41 A peripheral blood smear shows numerous red cells with spiculated projections of relatively uniform size and distribution. The patient is asymptomatic, and the projections are most prominent at the feathered edge. Which interpretation is most appropriate?

42 A blood film contains red cells with irregularly spaced, variably sized thorn-like projections and minimal central pallor. Which finding best distinguishes these cells from echinocytes?

43 A smear from a patient with anemia shows many red cells containing small, dense, round inclusions near the cell periphery. The inclusions remain visible after a supravital stain. Which identification is most likely?

44 A red cell has a single, round, deeply basophilic inclusion on a Romanowsky-stained smear. Which additional finding would most strongly support recent splenic dysfunction?

45 A smear shows red cells with a bull's-eye appearance, a darker central area, and a surrounding pale zone. Which combination best explains the morphology?

46 A patient with severe microcytic anemia has a smear containing pencil-shaped cells, marked anisopoikilocytosis, and hypochromia. Which feature would most strongly favor iron deficiency over thalassemia trait?

47 A blood smear demonstrates red cells with slit-like or absent central pallor and a nearly spherical outline. Which additional observation would support hereditary spherocytosis rather than an artifact?

48 A smear shows numerous fragmented red cells, including helmet cells and triangular fragments. Which platelet finding would make a microangiopathic process particularly likely?

49 A smear contains many elongated red cells with cigar-like forms, but the cells are most numerous only at the feathered edge. What is the best next laboratory action?

50 A differential count is being performed on a well-stained smear. A leukocyte has a multilobed nucleus with thin connecting filaments and pale cytoplasm containing fine lilac granules. Which identification is most accurate?

51 A leukocyte has a bilobed nucleus largely obscured by coarse, intensely orange-red granules. Which feature is most useful for distinguishing it from a basophil?

52 A leukocyte contains very coarse, dark blue-purple granules that partially obscure an irregularly lobed nucleus. Which interpretation is most appropriate?

53 A large leukocyte has abundant gray-blue cytoplasm, irregular borders, fine azurophilic granules, and a folded nucleus with lacy chromatin. Which observation would help separate it from a reactive lymphocyte?

54 A cell has abundant deeply basophilic cytoplasm that scallops around neighboring erythrocytes, an irregular nucleus, and occasional pale perinuclear zones. Which classification is most likely?

55 A leukocyte shows a round to slightly indented nucleus with dense clumped chromatin and only a narrow rim of sky-blue cytoplasm. Why should this cell not be classified as a blast solely because of its high nuclear-to-cytoplasmic ratio?

56 A smear contains leukocytes with pale cytoplasmic inclusions shaped like elongated rods. The inclusions occur in cells with delicate chromatin and occasional nucleoli. Which conclusion is most justified?

57 A smear from a febrile patient shows neutrophils with coarse dark granules, pale blue cytoplasmic inclusions, and cytoplasmic vacuoles. Which interpretation best integrates these findings?

58 A smear shows numerous tiny purple structures, some isolated and others forming small aggregates. They are much smaller than erythrocytes and lack nuclei. What is the most important morphological distinction from debris?

59 A platelet estimate appears unexpectedly low, and the smear shows platelet aggregates at the feathered edge. Which conclusion is most appropriate?

60 A smear is made from an old blood sample. Red cells show increasing crenation, leukocytes have cytoplasmic vacuoles, and nuclear detail is poorly preserved. Which action is most appropriate before interpreting disease-related morphology?