SISTEMA EXCRETOR 🧍🏻♂️ El aparato urinario y las glándulas sudoríparas 🧬 Ciencia para niños
What is the Excretory System?
Overview of the Excretory System
- The excretory system consists of the urinary apparatus and sweat glands, responsible for expelling unnecessary substances from the body.
- Excretion involves eliminating toxic substances that can be harmful if retained in the body, with blood playing a crucial role in collecting these wastes.
Components of the Urinary Apparatus
- The main organs of the urinary apparatus are the kidneys, which filter waste from blood and act like sieves to clean it.
- After filtration, waste products are transformed into urine, which contains about 95% water.
Urine Pathway
- Urine travels from the kidneys through tubes called ureters to reach the bladder.
- The bladder stores urine until it is expelled through a tube known as the urethra during urination.
How Do Sweat Glands Function?
Role of Sweat Glands
- Sweat glands located beneath the skin also help cleanse blood by expelling sweat, which is primarily composed of water (99%) along with salts and other substances (1%).
Importance of Sweating
- Sweating occurs when we are hot or exercising; it helps regulate body temperature by cooling us down.
- During intense exercise, our bodies can produce between 3 to 4 liters of sweat per hour, highlighting its significance in thermoregulation.
Key Takeaways on Waste Elimination
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