The Main Function Of The Excretory System

The Main Function Of The Excretory System

The excretory system is responsible for eliminating the waste produced by the organism. These wastes must be discarded, or excreted, so that the body remains healthy. The human excretory system includes the skin, the kidneys, the large intestine and the liver. Each of these organs helps the body to remove or eliminate the waste it consumes when it eats or drinks something, or those it produces during metabolic or vital functions.

Kidneys

The kidneys produce urine, which removes excess nitrogen and other waste products from the body. The blood enters the kidney and is then filtered through various organs and ducts in that organ. During this filtration process, water and other beneficial molecules are reabsorbed in the body while additional waste products are added to the urine. Finally, the excess salt is added to this liquid as well. The urine then travels through a duct that eventually connects to the renal pelvis. From there, it flows to the bladder and is stored until the bladder fills up. When this happens, people urinate to empty the bladder, and all the added waste, including nitrogen and salt, are eliminated from the body.

Liver

The liver detoxifies and breaks down chemicals, poisons and other toxins that enter the body. For example, the liver transforms ammonia (which is poisonous) into urea (which subsequently filters into the kidney to create urine). The liver also produces bile, and the body uses it to break down fats that are useful and unusable waste.

Bile

After bile is produced in the liver, it is stored in the gallbladder. It is then secreted in the small intestine, where it helps break down ethanol, fats and other acidic wastes such as ammonia into harmless substances.

The role of the large intestine

The large intestine collects waste from the entire body. Remove any remaining usable water and then remove solid waste. Having six to seven meters in length, it transports the waste through the conduits to be excreted.

The skin

The skin excretes sweat through the sweat glands throughout the body. I am helping to eliminate additional waste. On the other hand, the sweat, helped by the salt, evaporates and helps keep the body cool when it is hot.

Eccrine glands

Like the sweat glands, the eccrine glands allow excess water to leave the body. Most of these glands are located mainly in the forehead, the soles of the feet and the palms of the hands, although in fact they are in all parts of the organism.These help the body maintain control of its temperature.

Video Tutorial: Learn Biology: Human Excretory System.

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