The endocrine system consists of several glands, all in different parts of the body, that secrete hormones directly into the blood rather than into a duct system. Therefore, endocrine glands are regarded as ductless glands. Hormones have many different functions and modes of action; one hormone may have several effects on different target organs, and, conversely, one target organ may be affected by more than one hormone.
The endocrine system consists of several glands all in different parts of the body that secrete hormones directly into the blood rather than into a duct system Therefore endocrine glands are regarded as ductless glands Hormones have many different functions and modes of action; one hormone may have several effects on different target organs and conversely one target organ may be affected by more than one hormone