Which of the following statements is correct of hormones? Hormones are

Explanation

Hormones are chemical messengers produced by glands in the body that regulate various bodily functions. The question is asking which statement is correct about hormones. The options are: Option A: Secreted into the blood through ducts Option B: Secreted directly into the bloodstream (Correct) Option C: Inactive chemical substances in the bloodstream Option D: Non-specific in their mode of action The correct answer is Option B, which states that hormones are secreted directly into the bloodstream. This means that hormones are not transported through ducts, but rather are released directly into the bloodstream by endocrine glands. Once in the bloodstream, hormones travel throughout the body to their target cells and organs, where they bind to specific receptors and initiate a response. It is important to note that hormones are highly specific in their mode of action, meaning that each hormone only binds to specific receptors on specific cells or organs. This specificity ensures that hormones only affect the target cells or organs they are intended to regulate, and not other cells or organs in the body. In summary, hormones are secreted directly into the bloodstream by endocrine glands, and are highly specific in their mode of action.