Question

The given figure represents a single nephron from a mammalian kidney. Identify the labeled parts and match them with the functions(i-iv) and select the correct option
Site of ultrafiltration
Particularly sensitive to ADH
The main site for reabsorption of glucose and amino acids.
Largely responsible for the maintenance of blood ph.
i)-A ii)-E iii)-C iv)-D
i)-A ii)-B iii)-C iv)-D
i)-A ii)-B iii)-C iv)-E
i)-A ii)-B iii)-D iv)-E

Answer 1

A nephron is the essential basic and utilitarian unit of the kidneys that directs water and solvent substances in the blood by separating the blood, reabsorbing, and discharging the rest as urine. Its capacity is fundamental for homeostasis of blood volume, pulse, and plasma osmolarity.

Step by step answer:
1. The structure represented by A is the Malpighian corpuscle. These are the sites of ultrafiltration.
2. The structure represented by E is a collecting duct. In this, a lot of water is reabsorbed in the gathering duct. These are affected by ADH.
3. The structure represented by C is - Proximal convoluted tubule. It is the primary site for the reabsorption of glucose and amino acids.
4. The structure represented by D is a distal convoluted tubule(D). In this structure both hydrogen particles and ammonium particles are emitted, subsequently, it keeps up blood pH.

Hence, the correct option is A - i)-A ii)-E iii)-C iv)-D

Additional information:
Nephron is regarded as the ultrafiltration unit of the kidney, the structure that really delivers urine during the time spent eliminating waste and overabundance substances from the blood. There are around 1,000,000 nephrons in every human kidney.

Note: The crudest nephrons are found in the kidneys (pronephros) of crude fish, land, and water proficient hatchlings, and incipient organisms of further developed vertebrates. The nephrons found in the kidneys (mesonephros) of creatures of land and water and most fish, and in the late undeveloped improvement of further developed vertebrates, are just marginally further developed in structure. The most developed nephrons happen in the grown-up kidneys, or metanephros, of land vertebrates, for example, reptiles, fowls, and well-evolved creatures.