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Simple cuboidal epithelium is an intermediate form between simple squamous
and simple columnar epithelium. The epithelial cells appear square on section,
but from the surface they appear polygonal. Simple cuboidal epithelium usually
lines small ducts and tubules which may have excretory, secretory or absorptive
functions; examples are the small collecting ducts of the kidney, salivary
glands and pancreas. This micrograph shows the cells lining a small collecting
tubule in the kidney. If boundaries between the cells are indistinct (as
they often are), the nuclear shape can provide an approximate indication
of cell shape and size. |
