In the figure shown here, the structure indicated by the letter "E"
A) carries urine to the urinary bladder.
B) carries urine to the outside of the body.
C) returns filtered blood to the systemic circulation.
D) further alters the composition of the urine formed by the nephrons.
E) empties urine from the renal medulla.

Question

Quizplus · Accepted Answer

The outer layer of the kidney is the cortex. The inner layer is the medulla which is divided into the renal pyramids A), which contain the nephron loops and the renal columns. The open area which is innermost is the pelvis D) where urine collects before it leaves the kidney through the ureter E). The renal artery B) brings arterial blood to the kidney and the renal vein takes venous blood away C). The ureters do not alter composition of urine and carry it to the urinary bladder.

In the Figure Shown Here, the Structure Indicated by the Letter