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What are fun facts about the excretory system?

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Quick Answer

One fun fact about the excretory system is that the kidneys receive signals to produce less urine in an effort to preserve hydration when the temperature is hot or there isn't much drinking water available, according to Biology4Kids. When someone consumes too much water, hormones release to make urine production increase.

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Full Answer

All of the blood in a person's body cycles through the kidneys approximately 400 times daily, according to Easy Science for Kids. As the blood passes through the kidneys, they filter harmful wastes and excess water out of the bloodstream, notes the National Kidney and Urologic Diseases Information Clearinghouse. The wastes and fluid comprise urine, which then travels out of the kidneys and into the bladder through two ureters.

Once the bladder nears its urine capacity, healthy individuals experience the urge to use the restroom, notes the he National Kidney and Urologic Diseases Information Clearinghouse. The urine then exits the body through the urethra, which is shorter in women than in men.

In addition to the kidneys, bladder, ureters and urethra, the skin and the lungs are also components of the excretory system, explains Monroe County Women's Disability Network. The skin is the human body's biggest organ and releases sweat via perspiration. The lungs release carbon dioxide, another waste product in humans, via the process of respiration.

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Related Questions

  • Q:

    What does the skin do in the excretory system?

    A:

    The skin excretes sweat and dead cells from the body, according to the Franklin Institute. Sweating and dead cell excretion through the skin is a function of the integumentary system, which supports the excretory system.

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  • Q:

    What is the main function of the excretory system?

    A:

    The excretory system is a collection of organs tasked with removing excess nitrogen and other toxins from the body. The kidneys, liver and large intestine perform most of the filtration duties. Solid waste passes out through the colon, gaseous waste exits the body through the lungs and excess liquid leaves through the bladder and skin.

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  • Q:

    Why is the excretory system important to the human body?

    A:

    Course information from the University of Cincinnati states that the excretory system is important to the human body because without it, nitrogenous wastes would build up in blood and tissues to toxic levels. The kidneys play a major role, filtering the nitrogenous wastes from the blood and mixing them with water to make urine. The kidneys filter large volumes of blood every day for this purpose.

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    What are some fun facts about sand dollars?

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    One fun fact about sand dollars is that these animals are closely related to sea urchins. In addition, the white or off-white sand dollar skeletons found on beaches are called "tests," and their five-jawed mouths are at the center of the star-shaped markings on the tests.

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