Final answer:
d) antidiuretic hormone. Arginine vasopressin is identical to antidiuretic hormone (ADH). ADH helps conserve water when body fluid volume is low by promoting water reabsorption in the kidneys and increasing blood pressure as a vasoconstrictor.
Step-by-step explanation:
Arginine vasopressin is identical to antidiuretic hormone (ADH).
ADH, also known as vasopressin, is produced by the hypothalamus and stored and released from the posterior pituitary gland. Its primary function is to help the body conserve water when body fluid volume is low. ADH acts on the kidneys by promoting the reabsorption of water, thus reducing urine production. Additionally, ADH acts as a vasoconstrictor, meaning it narrows the blood vessels and increases blood pressure.