Updated By: LatestGKGS Desk
Biology: Excretory System, Kidney, Urine Formation
Definition of the Excretory System and parts
The system of an organism's body that performs the function of excretion, the bodily process of discharging wastes is known as an Excretory System.
Kidney:-
The kidney is made up of three sections: the renal cortex, the renal medulla, and the renal pelvis.
Tarterioles go to the Bowman's Capsules of nephrons, where the wastes are taken out of the blood by pressure filtration.
Peritubular capillaries also surround the nephron so substances can be taken in and out of the blood.
The renal cortex is the outer layer of the kidney and the medulla is the inner layer of the kidney.
Both of the ureters lead the urine into the body's only urinary bladder, which expands and sends nerve impulses when full.
Urine Formation:-
Formation of urine is a process important for the whole organism. Not only acid-base balance is modulated by it, but also blood osmolarity, plasma composition, and fluid volume, and thus it influences all cells in our body. A healthy adult person produces 1.5-2 liters of urine per day and this process involves three basic mechanisms:
1- Glomerular filtration 2-Tubular reabsorption 3- Tubular secretion
