How does your body eliminate waste?

The bladder is an organ that temporarily stores urine. The urethra is the tube that carries the urine from the bladder to outside of the body.

The bladder can hold up to 1 1/2 pints of urine. It shrinks and stretches according to how much urine there is, and it does so very well.

Urine flows from the kidneys to the bladder through ureters which are tubes. When the bladder is full, a signal is sent to the brain by the nervous system.

The process of urine being released from the bladder is called urination. It then flows into the urethra.

We also eliminate waste through our skin. It is sweat! Sweat is made of water, excess salts, and other waste products. Sweat also helps cool you down because it gets rid of excess heats.

Our skin has tiny openings called pores that are connected to sweat glands. There are about 2.6 million sweat glands in our skin that produces sweat when our body needs to cool down.

If enough sweat is gathered in the glands, the sweat is pushed up to the surface as droplets. After they go past the surface, is evaporates, which is what cools the bodies down.