Question

The Glomerular filtrate contains
A. Blood minus blood cells and proteins
B. Blood minus blood cells
C. Blood minus proteins
D. Plasma minus proteins

Answer 1

Hint: In the process of making urine, the glomerular filtration is the first step. Through various processes, it is enabled to filter excess fluids and waste products out of our blood which are being collected by various tubules of the kidney. Through this type of filtration, mainly nitrogenous waste products as excreted from our bodies are getting collected in the urine.

Complete Answer:
1. In urine formation, the primary step consists of the filtration of blood as being carried out by this glomerular filtration.
2. This entire process of filtration takes place through three layers. They are: endothelium of glomerular blood vessels, the epithelium of Bowman’s Capsule and through the base membrane which is located in between these two layers.
3. In Bowman’s Capsule, the epithelial cells are also known as podocytes which are arranged in an enclosed manner. It leaves some space or gaps which are called slit pores.
4. These slit pores eventually help in perfect filtration of blood through these membranes. In such a way, all of the components of blood but barring the proteins and blood cells (mainly the Red Blood Cells) would pass through the Bowman’s Capsule.
5. In this way, it has been clear that Glomerular Filtrate contains the blood without blood cells and proteins.

Hence the correct answer is option A.

Note: Through Glomerular Filtrate, blood cells and plasma proteins which are available in blood can’t pass through as they are comparatively bigger in size. But, any other components with low slit density like water, glucose, salt, amino acids, urea and others can pass through. Through a semipermeable membrane, a hydrostatic pressure forces a liquid with various little components as soluble in the water. It is called Ultrafiltration.