A)to act directly on the interstitial fluid, the fluid that bathes the cells, to maintain constancy in its composition
B)to contribute significantly to long-term regulation of arterial blood pressure by maintaining the proper plasma volume
C)to excrete metabolic waste products
D)to assist in maintaining the proper acid-base balance of the body

A)glomerulus
B)nephron
C)medulla
D)juxtaglomerular apparatus

A)Their tubules lie in the renal cortex.
B)They are important in the ability of the kidneys to concentrate urine.
C)Their loops of Henle dip deep into the medulla.
D)Their peritubular capillaries form vasa recta.