The passive biological system which regulates the internal environment of an organism is called the excretory system. This system helps to prevent damage from occurring by removing unneeded and excess waste materials from the organism. Removing the waste products that are created through metabolism is the responsibility of the excretory system. It eliminates waste products along with gaseous waste and other liquids.
Some facts regarding the excretory system will be outlined in a moment. First let’s look at the urinary system and how it functions in the body. As mentioned previously, everything that we consume is not always used by the body. A majority of the liquids and foods we eat will be filtered from our blood in the form of urine. We could become extremely ill if our blood were to not filter these waste products out. It’s the kidneys which ensure that our blood remains at the perfect consistency, being neither too thick nor too thin.
The kidneys also make sure that our blood is not overloaded with minerals, vitamins, or excess waste material. The kidneys work to filter our blood over and over through its millions of tiny filters. Blood is passed through these filters on a continual basis allowing the kidneys to filter around 180 liters of blood. The processes of secretion, re-absorption, and filtration are how the kidneys are able to eliminate these non-essential materials in our body. Waste is collected at the center of the kidneys then it travels down to the ureters and is passed to the bladder. That waste will be held in the bladder for a short period until it is ready for elimination from the body.
Facts about the Human Excretory System
We have taken a look at the important organs which aid our excretory system in the processes of filtering and digesting out food. Now let’s look at some of the amazing facts regarding the excretory system.
- Your kidneys do more than just remove the garbage from your body. They also work towards balancing the amount of vitamins, minerals, fat, and protein that are found in the blood. It does this so that our body can easily perform its day to day tasks.
- The excretory and digestive systems are connected so as to provide a route for these chemicals to be released. All these chemicals are not needed by the body. The right and left kidneys are assisted by a number of organs in the body which help in disposing waste products.
- Each day our body eliminates around 1.5 quarts of urine. All of the liquids, minerals, and vitamins that are of no use to the body are contained in the urine.
- The bladder of a human being is nearly the same size as the average human brain.
- In one individuals life span the liver can produce nearly 6,500 ounces of bile.
- In our life time an individual could urinate close to 7,850,000,000,000 gallons of fluid.
- There are two kidneys in the human body. The left kidney is always found higher than the right kidney.
- A really extraordinary fact regarding the excretory system is that up to 400 ml of urine can be held in a human bladder.
- Also considered part of the excretory system is our skin. This is because the skin eliminates waste through sweat along with various toxins.
- Urine contains a high amount of urea which can be used by plants as a source of nitrogen. Because of this, diluted urine can be used in gardens and potted plants.