How do exocrine glands differ from endocrine glands?

• A. Endocrine glands have ducts that carry their secretions to target organs.
• B. Exocrine glands release their secretions through ducts to an external or internal surface.
• C. Exocrine glands secrete hormones directly into the bloodstream.
• D. Endocrine glands secrete enzymes for digestion.

Answer: (B)

Verified step by step guidance

1. Understand the basic definitions: Exocrine glands release their secretions through ducts to an external or internal surface, while endocrine glands secrete hormones directly into the bloodstream without using ducts.
2. Identify the function of exocrine glands: They produce substances like sweat, saliva, or digestive enzymes, which are transported through ducts to specific sites.
3. Identify the function of endocrine glands: They release hormones, which are chemical messengers, directly into the bloodstream to regulate various body functions.
4. Clarify the misconception: Endocrine glands do not have ducts; they release hormones directly into the bloodstream, unlike exocrine glands which use ducts.
5. Summarize the key difference: Exocrine glands use ducts to transport their secretions to specific locations, whereas endocrine glands release hormones directly into the bloodstream without ducts.