GENERAL HISTOLOGY

Detailed explanation-1: -Epithelial tissue is avascular but innervated. Nutrients are supplied by diffusion from blood vessels of the lamina propria. Epithelia contain stem cells in their basement membranes which enable continuous epithelial renewal.

Detailed explanation-2: -Epithelial tissues do not contain blood vessels and as such are avascular. Connective tissues are usually highly vascular and so the nearby connective tissue provides essential nutrients (from the blood) to the epithelial tissue.

Detailed explanation-3: -Epithelial tissue is avascular, meaning that it does not have blood vessels directly supplying the tissues with nutrients. Instead, the cells and tissues below the epithelial tissue act as a relay for the nutrients.

Detailed explanation-4: -Tissues that do not contain blood vessels or lymphatic system are referred to as avascular tissues. Examples of avascular tissue include epithelial cells, cornea of the eye and cartilage.

Detailed explanation-5: -Epithelial tissue is a highly cellular tissue that overlies body surfaces, lines cavities, and forms glands. It is avascular but innervated.