Zoology - Chemical Coordination and Integration Question with Solution | TestHub

Pituitary hormones are hypothalamic hormones that are mostly proteinaceous or polypeptide in nature, therefore binds to their specific membrane-bound or extra-cellular receptors. Catecholamine from the adrenal medulla also does the same thing. About 20 steroids (steroidogenic) compounds are secreted from the adrenal cortex and these are called adrenocorticoids or corticosteroids. These hormones are steroidal in nature and these hormones bind to their specific receptors present inside the target cells.