But amount in blood varies after meals. Control occurs as blood passes through Islets of Langerhans in pancreas . Glands, Hormones, and Targets Q . Gland products are localized to region around duct. Hormone-producing cells secrete hormones directly into bloodstream.
Chemicals circulate through whole body.
Consult The Endocrine Web . Excessive drinking leads to production of excessive quantities of urine, eventually to dehydration. Athletes sometimes take in attempt to stimulate muscle growth. Can lead to long term problems, also illegal. Controls development, regulates metabolism.