What are exocrine glands
How do they differ from endocrine gland?

The key difference between the two types is that, whereas exocrine glands secrete substances into a ductal system to an epithelial surface, endocrine glands secrete products directly into the bloodstream. Exocrine secretions form in the acinus, a small cluster of cells at the origination of glandular ducts.

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1. dermis

2. chemical

3. urine

4. viruses

5. antibodies