They act as signals. All they need to be is identifiable.
Endocrine glands secrete chemical signals directly into the bloodstream.
Of course they are hormones. Hormones are only produced by endocrine glands
Yes, hormones are produced by the ductless glands of the endocrine system. Hormones are the chemical messengers that carry out the work of the endocrine system.
Chemical substances produced by glands of the endocrine system are hormones. Examples include insulin, testosterone, and prolactin.
i think is hormones
Your Brain. The hypothalamus signals the production of hormones.
the endocrine system is made up of glands and secrets hormones.these hormones regulates the body growth.metabolism and function.
Endocrine glands secrete hormones which help maintain homeostasis.
The nervous system works with the endocrine system.