Which glands release secretions onto surfaces via ducts?

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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

Which glands release secretions onto surfaces via ducts?

Explanation:
The important idea is that secretions exit the gland through ducts to reach a surface. Glands that do this—carrying their product to surfaces such as the skin or a body lumen via ducts—are exocrine glands. Sweat glands and salivary glands exemplify this: their secretions travel through ducts to the skin or the oral cavity. Endocrine glands, by contrast, lack ducts and release hormones directly into the bloodstream. Ductless glands are the same as endocrine glands. Mixed glands contain both exocrine and endocrine parts, but the exocrine portion still uses ducts to surface.

The important idea is that secretions exit the gland through ducts to reach a surface. Glands that do this—carrying their product to surfaces such as the skin or a body lumen via ducts—are exocrine glands. Sweat glands and salivary glands exemplify this: their secretions travel through ducts to the skin or the oral cavity. Endocrine glands, by contrast, lack ducts and release hormones directly into the bloodstream. Ductless glands are the same as endocrine glands. Mixed glands contain both exocrine and endocrine parts, but the exocrine portion still uses ducts to surface.

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