antidiuretic hormone acts upon the kidney tubules of the nephron.
antidiuretic hormone acts upon the kidney tubules of the nephron.
which part of the nephron does antidiuretic hormone act upon?
the kidney tubules
vasopressin, also called antidiuretic hormone (adh), arginine vasopressin (avp) or argipressin, is a hormone synthesized as a peptide prohormone in neurons in the hypothalamus, and is converted to avp. it then travels down the axon of that cell, which terminates in the posterior pituitary, and is released from vesicles into the circulation in response to extracellular fluid hypertonicity (hyperosmolality). avp has two primary functions. first, it increases the amount of solute-free water reabsorbed back into the circulation from the filtrate in the kidney tubules of the nephrons. second, avp constricts arterioles, which increases peripheral vascular resistance and raises arterial blood pressure.
vasopressin
syndrome of inappropriate antidiuretic hormone secretion









































syndrome of inappropriate antidiuretic hormone secretion (siadh) is characterized by excessive unsuppressible release of antidiuretic hormone (adh) either from the posterior pituitary gland, or an abnormal non-pituitary source. unsuppressed adh causes an unrelenting increase in solute-free water being returned by the tubules of the kidney to the venous circulation.
syndrome of inappropriate antidiuretic hormone secretion