Which tissue type forms glands and covers the surface of the body, lines cavities, and includes glands that secrete endocrine or exocrine products?

Which tissue type forms glands and covers the surface of the body, lines cavities, and includes glands that secrete endocrine or exocrine products?

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

Answer: (A)

Epithelial tissue forms coverings and glands. It lines surfaces and cavities of the body and makes up glands that can secrete products either into the bloodstream (endocrine) or onto surfaces through ducts (exocrine). This tissue is tightly packed and organized with a top (apical) surface, a bottom (basal) surface on a basement membrane, and it tends to be avascular while renewing itself rapidly. Glands arise from epithelial tissue during development, which is why this tissue type encompasses both the covering/lining roles and the glandular roles. In contrast, connective tissue provides support and binding, muscle tissue specializes in contraction, and nervous tissue handles signaling, so they don’t fit the description as precisely.

Epithelial tissue forms coverings and glands. It lines surfaces and cavities of the body and makes up glands that can secrete products either into the bloodstream (endocrine) or onto surfaces through ducts (exocrine). This tissue is tightly packed and organized with a top (apical) surface, a bottom (basal) surface on a basement membrane, and it tends to be avascular while renewing itself rapidly. Glands arise from epithelial tissue during development, which is why this tissue type encompasses both the covering/lining roles and the glandular roles. In contrast, connective tissue provides support and binding, muscle tissue specializes in contraction, and nervous tissue handles signaling, so they don’t fit the description as precisely.