Question

a ______ epithelium consists of a single layer of rectangular cells attached directly to a basement membrane. options: simple columnar, simple cuboidal, simple squamous, stratified squamous

Explanation:

The question is about identifying the type of epithelium with a single layer of rectangular (column - like) cells attached to the basement membrane. Simple columnar epithelium is defined as having a single layer of column - shaped (rectangular) cells resting on the basement membrane. Simple squamous has flat cells, simple cuboidal has cube - shaped cells, and stratified squamous has multiple layers of flat cells. So the correct option is simple columnar.

Answer:

A. simple columnar