The two main structures that make up a kidney are the
A. hilus and cortex
B. cortex and medulla
c. renal pelvis and medulla
The internal structure of the kidney is divided into two main areas a light outer area called the renal cortex, and a darker inner area called the renal medulla.
The two main structures that make up a kidney are the hilus and cortex (Option A).
To arrive at this answer, we can break down the question and look at the options provided. The kidney is a vital organ responsible for filtering waste and excess fluids from the blood to produce urine. It has several distinct regions and structures.
The hilus is the concave part of the kidney where the renal artery, renal vein, and ureter enter or exit the kidney. It acts as a doorway for blood vessels and urine drainage. The cortex, on the other hand, is the outer layer of the kidney, located just beneath the renal capsule. It contains numerous renal corpuscles, which are responsible for filtering blood.
Analyzing the given options, only Option A (hilus and cortex) includes both the hilus and cortex, which are indeed two main structures of the kidney. Therefore, the correct answer is Option A.