Respuesta :
Answer:
The tissue that always has an apical and a basal surface is epithelial tissues.
Explanation:
Epithelial tissues: It is a thin tissue which is covering all the exposed part of the body. They are helping in the formation of inner lining of the mouth, secretory glands, digestive tract, hollow parts of the organs such as heart, eyes, ear, lungs, etc.
Cells which making up epithelia closely bound to another through a specialized structure is known as tight junction. They are free from the nervous and blood vessels and are supported by the connective tissue is known as basement membrane. They have polarity with a basal domain which is facing the basement membrane and the apical surface facing the lumen present on the organ or the external environment.
