an __________ gland is a ductless gland that empties its hormone into the extracellular fluid, from which it enters the blood.
Chemical messengers which are released into the blood to be transported throughout the body. An (Endocrine/Exocrine) gland is a ductless gland that empties its hormones into the extracellular fluid, from which it enters the blood. Endocrine glands. These glands do not have ducts.