Question

given the following images of an actual white blood cell on the left and a model of the same white blood cell type on the right:

select they type of white blood cell they represent from the listing below.

lymphocyte
monocyte/macrophage
neutrophil
basophil
eosinophil

Explanation:

Identify cell characteristics

Using the White Blood Cells knowledge point:

• The micrograph on the left shows a white blood cell with a distinct bilobed nucleus and cytoplasm filled with bright reddish-orange granules.
• The model on the right depicts a bilobed nucleus (two large lobes connected by a thin strand) and a cytoplasm packed with prominent granules.

Match with leukocyte types

• Eosinophils are characterized by a bilobed nucleus and prominent, reddish-orange (eosinophilic) granules in their cytoplasm.
• Lymphocytes have a large, round nucleus with very little cytoplasm and no prominent granules.
• Monocytes are large agranulocytes with a kidney- or horseshoe-shaped nucleus.
• Neutrophils typically have multi-lobed nuclei (3 to 5 lobes) with pale, neutral-staining granules.
• Basophils have a bilobed or bent nucleus that is usually obscured by dark blue-purple, coarse granules.

Select the correct option

The visual evidence of a bilobed nucleus combined with bright reddish-orange granules uniquely identifies this cell as an eosinophil.

Answer:

• lymphocyte
• monocyte/macrophage
• neutrophil
• basophil
• eosinophil (Correct answer)