Posterior Pituitary
نویسنده
چکیده
Vasopressin and oxytocin are the only hormones known to be secreted by the neurohypophysis in humans. Human vasopressin is called arginine vasopressin (AVP) to distinguish it from lysine vasopressin in pigs. It is also called antidiuretic hormone (ADH), which reflects its major physiologic action. These hormones are nonapeptides (nine amino acids) with similar primary structures but very different biological and immunological properties. They are characterized by a ring structure with disulfide (S-S) linkage (Figure 1).
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