Question

During glomerular filtration the malpighian body acts like a
a) structural unit
b) biological filter
c) biological buffer
d) acid-base balancer

Answer 1

Urine is constantly formed by nephron and the procedure involved for the formation of urine is: Glomerular ultra filtration,

Tubular Reabsorption and Tubular Secretion. Ultra-filtration of blood usually occurs in the malpighian body that acts like a biological filter. So the correct answer is “B”.

A malpighian body consists of Bowmann’s capsule and glomeruli. The kidneys usually get a rich blood supply of approximately 1200ml/min or 20 to 25% of the cardiac output.

Answer 2

Answer:

The correct answer is b) biological filter.

Malphigian body or renal corpuscle is a biological filter located in the beginning of the nephron. It consists of glomerulus and Bowman's capsule.

It filters all the proteins and essential macro-molecules from the bloodwhich are send back with filtered blood in efferent arteriole.

The filtration membrane is formed by three membranes:

• endothelial layer of capillary,
• basement membrane of bowman's capsule, and
• podocyte of epithelial layer of bowman's capsule.

These layers together fine slits and pores through which only water, electrolytes, amino acids, glucose, urea, uric acid, vitamins, fatty acids, and creatinine can pass.

Essential elements such as vitamins, glucose, electrolytes etc are selectively reabsorbed and passed back to blood through renal vein.