Question

fill in the blank question
most hormones are transported in the
to their target cells.

Explanation:

Hormones are chemical messengers. Most hormones, especially those that are water - soluble (like peptide hormones) or even many lipid - soluble hormones that are bound to transport proteins, are transported through the bloodstream (blood) to reach their target cells. The circulatory system, with blood as the transport medium, carries hormones from the endocrine glands where they are produced to the cells that have the appropriate receptors for them.

Answer:

blood