Question

Column of Bertini in the Kidneys of mammals are formed as extension of
A) Cortex in medulla
B) Cortex in pelvis
C) Medulla in pelvis
D) Pelvis in ureter

Answer 1

Hint: The excretion of body fluid and the blood purification is conducted by the kidneys. The kidneys have many different parts that work different functions for the filtration of blood.

Complete Answer:
- The kidneys are the two bean-like organs found in the renal system of the human body. They involve the removal of waste products from the body as urine. They also involve in the blood purification process before sending back the blood to the heart.
- It consists of many parts like; nephrons, renal corpuscle, renal tubules, renal cortex, renal medulla, collecting ducts, renal pelvis, and ureter. The nephrons are the important part of the kidneys; they take the blood in, metabolize the nutrients, and help to release the waste products from the filtered blood.
- Each kidney consists of 1 million nephrons. The renal corpuscles is the part of the kidneys where after the entering of blood to the nephrons it goes inside the renal corpuscles, it is considered as the Malpighian body, it comprises of glomerulus that absorbs the protein from the blood and bowman capsule that involve in the movement of remaining fluid to the renal tubules.
- The renal tubules is the series of tubes that divided into proximal convoluted tubules that absorbs water, glucose and sodium, loop of henle that absorbs potassium, sodium, and chloride, and distal convoluted tubule that absorbs more sodium into the blood.
- The renal cortex is the outer part of the kidneys that involves providing protection to the inner structure. The renal medulla also named as column of Bertini contains the loop of henle and renal pyramids.
- The collecting ducts found in the end of every nephron in the renal medulla it collects the filtered fluid exit the nephrons, and at last the renal pelvis is found as funnel-shape in the inner part of the kidneys, it is the pathway for the waste fluid towards the bladder.
- Now, the column of Bertini is extended to the renal cortex found between the renal pyramids. It allows the cortex to anchor properly. Each of the columns comprises blood vessels and urinary tubes and a fibrous material.

Thus, the correct answer is ‘A’ Cortex in medulla.

Note: The renal pelvis has calyces that collect the fluid before transferred to the bladder, hilum found in the inner edge of the kidney it gives the bean like shape to the kidney, and the ureter is the muscle tube that pushes the urine the bladder.