Epithelial tissue is characterized by
A) tightly packed cells.
B) absence of any basement membrane.
C) extensive extracellular matrix.
D) a rich blood supply.
E) Both "tightly packed cells" and "a rich blood supply" are correct.

Question

Quizplus · Accepted Answer

Epithelial tissue is characterized by tightly packed cells, which form a continuous layer covering surfaces and lining cavities of the body. This arrangement facilitates the tissue's roles in protection, absorption, secretion, and sensation. Unlike some other tissue types, epithelial tissue does not have a rich blood supply; instead, it is avascular and receives nutrients through diffusion from underlying tissues. It also has a basement membrane, which separates it from underlying tissues, and typically has a minimal extracellular matrix compared to connective tissue.

Epithelial Tissue Is Characterized by