List out the things that makes you amazing in excretory system of human being. (AS6)

The things that makes me amazing in excretory system is the formation of urine in the nephrons and its contribution in osmoregulation.

Formation of urine:

Nephrons are known as the structural and functional units of kidney. They are also known as uriniferous tubules, renal tubules or simply kidney tubules. Each kidney tubule is composed of the following structures:

i. Bowman’s capsule: It is a thin walled cup whose hollow internal space continues into the tube. The outer concavity of the cup lodges a knot like mass of blood capillaries called the glomerulus. This is where the ultra filtration occurs.

ii. Proximal convoluted tubule: It is the starting of the convoluted region lying within the cortex of the kidney. This is where the reabsorption starts.

iii. Loop of Henle: It is a hairpin shaped structure which connects the proximal and the distal convoluted tubules and lies within the medulla.

iv. Distal convoluted tubule: It is the end part of the kidney tubule which opens into the collecting duct. This collecting duct receives the concentrated urine which it carried to the urinary bladder.

This is how urine is produced in the nephrons and further carried to the urinary bladder for storage.

Osmoregulation:

Osmoregulation is the maintenance of osmotic pressure of the blood. During the removal of wastes, like urea, from our body the blood also regulates its composition, that is, the percentage of water and salts in the blood.