GENERAL HISTOLOGY

Detailed explanation-1: -Nitrogenous wastes which are removed by the kidneys are urea and ammonia. Urea is the main excretory product that is filtered and excreted out from the blood by the kidneys. Ammonia is mostly converted into urea in the liver and excreted out in the urine.

Detailed explanation-2: -Yes, urea is a nitrogenous waste. Excretion: Excretion is the process by which nitrogen-containing waste products of metabolism are eliminated from the body. The main source of nitrogenous waste in humans is Urea excretion is known as ureotelism, and the animals that do so are known as ureotelic animals.

Detailed explanation-3: -Overview of protein metabolism. Amino acids may also be metabolized through the liver to form urea, which is then excreted in the urine.

Detailed explanation-4: -In some mammals and amphibians, urea is excreted as a metabolic waste product. Such organisms are called ureotelic. In these organisms, ammonia that is produced is converted to urea in the liver of animals and is released back into the blood. The kidneys filter the urea and expel the urea outside the body.

Detailed explanation-5: -Statement 1: Nitrogenous waste excreted through urine in humans is urea.