Which of the following are ciliated cells?

A) Columnar cells of upper respiratory tract
B) Sperm cells
C) Columnar cells of small intestine
D) Red blood cells
E) Macrophage (large, mobile white blood cell)

Ciliated Cells

Cells that have fine hair-like projections on their surface, which move in unison to transport substances or debris across the cell surface.

Columnar Cells

Elongated cells resembling columns, often found lining organs like the intestines and respiratory tract, where they might secrete or absorb substances.