AP BIOLOGY

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: -The bean-shaped kidneys filter waste products out of the bloodstream and dispose of them by creating urine. Urine is made of these waste products dissolved in water.

Detailed explanation-3: -The kidneys remove waste products called urea from the blood through tiny filtering units called nephrons. There are about one million nephrons in each kidney. Each nephron consists of a ball formed of small blood capillaries, called a glomerulus, and a small tube called a renal tubule.

Detailed explanation-4: -The most common waste products are urea and creatinine, but there are many other substances that need to be eliminated. The kidneys act as very efficient filters for ridding the body of waste and toxic substances, and returning vitamins, amino acids, glucose, hormones and other vital substances into the bloodstream.

Detailed explanation-5: -The organ system responsible for ridding the body of nitrogen-containing wastes is called the excretory system. However, this system is also called the urinary system or even the renal system. It consists of the kidneys, ureters, bladder, and urethra. In the kidneys, blood is filtered to remove this waste.