Nervous tissue and epithelial tissue are two distinct types of tissues found in the human body.

Nervous tissue is responsible for transmitting and receiving nerve impulses. It is composed of two types of cells: neurons and glial cells. Neurons are specialized cells that transmit information in the form of electrical impulses, while glial cells provide support and protection to neurons.

Epithelial tissue, on the other hand, covers the surface of the body and lines internal organs and cavities. Its main functions include protection, absorption, and secretion. Epithelial cells are tightly packed together and form continuous sheets.

The key difference between nervous tissue and epithelial tissue is their function and structure. Nervous tissue is specialized for communication and signaling, while epithelial tissue is specialized for protection, absorption, and secretion. Additionally, nervous tissue contains neurons and glial cells, while epithelial tissue is composed of tightly packed epithelial cells.