Ductless glands in the human body secrete

• A. Enzymes
• B. Mucus
• C. Hormones
• D. Metabolic wastes

Answer: (C)

Ductless glands are endocrine glands that release hormones directly into the bloodstream, where these chemical messengers travel to distant tissues to regulate processes like metabolism, growth, and homeostasis. Because they lack ducts, their secretions aren’t sent to surfaces or cavities but are carried by blood to their targets.

Enzymes are typically secreted by exocrine glands that have ducts, releasing digestive enzymes into the digestive tract. Mucus is produced by mucous glands or goblet cells and is released onto surfaces via ducts or directly onto mucosal linings. Metabolic wastes are eliminated by excretory pathways rather than by ductless glands. Hormones fit the description because their production by ductless glands directly into the bloodstream is the defining feature of endocrine secretion.