Which tissue type lines organs and surfaces and often forms glands?

Which tissue type lines organs and surfaces and often forms glands?

• A. Nervous tissue
• B. Epithelial tissue
• C. Muscle tissue
• D. Connective tissue

Answer: (B)

Epithelial tissue lines organs and surfaces and forms glands because its cells are tightly packed to create a protective, selective barrier and to enable secretion. This tissue type covers the outside of the body and the inner linings of hollow organs and body cavities, helping regulate what enters and leaves and keeping surfaces moistened. It also gives rise to glands through invagination of the epithelium into underlying tissue, producing secretions; glands can release their products onto surfaces via ducts (exocrine) or into the bloodstream (endocrine). This combination of lining, protection, and secretory capability distinguishes epithelial tissue from nervous tissue (which transmits signals), muscle tissue (which contracts to move), and connective tissue (which supports and fills spaces).

Epithelial tissue lines organs and surfaces and forms glands because its cells are tightly packed to create a protective, selective barrier and to enable secretion. This tissue type covers the outside of the body and the inner linings of hollow organs and body cavities, helping regulate what enters and leaves and keeping surfaces moistened. It also gives rise to glands through invagination of the epithelium into underlying tissue, producing secretions; glands can release their products onto surfaces via ducts (exocrine) or into the bloodstream (endocrine). This combination of lining, protection, and secretory capability distinguishes epithelial tissue from nervous tissue (which transmits signals), muscle tissue (which contracts to move), and connective tissue (which supports and fills spaces).