Endocrine glands release hormones directly into the bloodstream.
The correct answer is "directly into the bloodstream." Endocrine glands are a part of the endocrine system and they release hormones directly into the bloodstream, which allows the hormones to travel to the target organs or tissues throughout the body. This is different from exocrine glands which release their secretions into tiny tubes called ducts, or through the surface of the skin, or into sweat glands. To answer this question, it is important to understand the function and anatomy of the endocrine system, specifically the way in which endocrine glands release hormones.
