Hormones and enzymes are distinct biological substances with different functions: hormones are chemical messengers released by endocrine glands to regulate various bodily processes by traveling through the bloodstream, while enzymes are protein catalysts produced by glands to speed up specific chemical reactions, often working at their site of production or within a duct system. The term “endocrine enzymes” is a misnomer; enzymes are catalysts, and hormones are chemical messengers, although some endocrine glands, like the pancreas, also produce exocrine enzymes for digestion in addition to endocrine hormones like insulin and glucagon.
Hormones / enzymes / endocrine system
Sex hormone
Growth hormone
Thyroid hormones
Glucagon
Cortisol
Adrenocorticotropic hormone
Insulin
Parathyroid hormone
Testosterone
Calcitonin
Triiodothyronine
Leptin
Somatostatin
Vasopressin
Aldosterone
Growth hormone–releasing hormone
Thyrotropin-releasing hormone
Gonadotropin-releasing hormone
Thyroid-stimulating hormone
Cholecystokinin
Oxytocin
Follicle-stimulating hormone
Dopamine
Norepinephrine
Erythropoietin
Melatonin
Ghrelin
Estradiol
Dehydroepiandrosterone
Corticotropin-releasing hormone
Secretin
Pancreatic polypeptide
Thyroxine
