Downgrowths of epithelial tissue are called?

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Prepare for the Epithelial Tissue Structure and Function Test. Explore with multiple choice questions and explanations. Master epithelial tissue concepts for your exam success!

Multiple Choice

Downgrowths of epithelial tissue are called?

Explanation:
Gland formation occurs when epithelial cells push downward into the underlying connective tissue, creating invaginations that can develop into secretory units and ducts. These downgrowths are epithelial glands. If the downgrowth retains a duct to the surface, it forms an exocrine gland; if it loses the duct, it forms an endocrine gland. Basal infoldings are inward folds of the basal membrane aimed at increasing membrane surface for transport, not glands. Microvilli are tiny apical projections that enlarge the surface area for absorption. Cilia are motile projections on the apical surface that help move mucus or fluids.

Gland formation occurs when epithelial cells push downward into the underlying connective tissue, creating invaginations that can develop into secretory units and ducts. These downgrowths are epithelial glands. If the downgrowth retains a duct to the surface, it forms an exocrine gland; if it loses the duct, it forms an endocrine gland.

Basal infoldings are inward folds of the basal membrane aimed at increasing membrane surface for transport, not glands. Microvilli are tiny apical projections that enlarge the surface area for absorption. Cilia are motile projections on the apical surface that help move mucus or fluids.

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