What tissue type has polarity and is avascular What tissue type has polarity and is avascular Solution The epithelial tissue do not receive vascular supply, so they are avascular. It is polar because it contains apical, lateral and basal membrane domains. The epithelial tissues form the sheet like outer covering of the body surfaces and provide protection to the organs. One surface of this epithelial tissue is not bound to anything and produces glandular secretions, also involved in absorption process. The characteristics of the epithelial tissues include the following: 1). Cells undergo frequent cell division 2). Lack of blood vessels 3). Cells are tightly packed by cell junctions..