Assertion: neuroepithelium's cell | /r/MadeOf | lots of endoplasmic reticulum
Facets:
value: for secretion
type: PURPOSE
Source sentences:
text: These epithelia are usually columnar, as the cells contain lots of endoplasmic reticulum, and golgi, for secretion, and they often have microvilli, to increase the surface area of the apical surface for absorption.