Assertion: epithelium's surface | /r/HasProperty | exposed to air
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: The free surface of the epithelium is exposed to air or fluids while the bottom is attached to the basement membrane.
text: The free surface of epithelial tissue is usually exposed to fluid or the air, while the bottom surface is attached to a basement membrane.
text: Cells within an epithelial sheet are polarized with two distinct sides: the apical surface, which is exposed to air or fluid; and the basal surface, which is attached to a distinct thin layer of ECM referred to as the basal lamina.
text: The free surface of the epithelium is exposed to air or fluids
text: The free surface of epithelial tissue is usually exposed to fluid or the air, while the bottom surface is attached to a basement membrane.