The excretory system produces nitrogen containing waste in the human body and removes excess and unnecessary things from the human body.
Thanks to the excretory system, man manages his body well and maintains the health of the body. Substances that are made as byproducts after the body’s metabolic process is complete, such as urea and creatinine, are excreted out of the body through this process. These substances can build up in the body and cause poisoning. All of these things are excreted from the body through the excretory system. The human excretory system mainly consists of a pair of kidneys, a pair of urethra, a bladder, and a urethra.
1. Kidney: There are a total of two kidneys on either side of the size region of the human abdominal cavity. The upper end of the kidney is below the twelfth thoracic vertebra and the lower end is above the third lumbar vertebra.
The left kidney is slightly higher than the human right kidney. Both kidneys are reddish and look a lot like bean seeds. The kidneys regulate the pH of our blood and maintain the balance of acids and alkalis.
2. Excretory duct or ureter: The duct formed from the pelvis of the kidney and enters the surface wall and protrudes back into the bladder is called the ureter.
The ureter is a tube that carries urine from the kidneys to the bladder. The upper half of the ureter is located in the abdomen and the lower half in the pelvic region.
Each duct is approximately 25cm long.
3. Bladder: The bladder is a triangular sac made up of involuntary thin-walled muscles. It is stretch compression. It is stretch compression.
The bladder can hold 800 to 750 millimeters of urine.
However, after 280-320 mm of urine accumulates in the bladder, the urge to urinate appears.
4. Urinary system: The main function of the urethra is to excrete urine from the body.
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