Urinalysis and Body Fluids 6th Edition by Majorie DiLorenzo, Susan Strasinger

Exercise 35

Decreased production of ADH:

A. Produces a low urine volume

B. Produces a high urine volume

C. Increases ammonia excretion

D. Affects active transport of sodium

Step 1 of 2

Antidiuretic hormone (ADH):

• Pituitary gland of the brain secretes the ADH hormone.

o It acts on the distal convoluted tubules and nephron’s collecting ducts to reabsorb water from the plasma filtrate.

• Antidiuretic hormone presence, the tubules permeability increases thereby, reabsorption of water occurs finally the urine output will be more concentrated.

• If the ADH secretion is decreased it leads to impermeability of tubules present in nephron.

o Impermeability does not reabsorb water content of the filtrate.

o Hence, it leads to production of higher volume of dilute urine.

• If the body hydration is high, the ADH secretion is low and the volume of the urine is high.

Therefore, “high urine volume” results when there is a diminishing of ADH production. Hence, the correct answer is option.