7A28_Tathya_Mankad_Science_L-10_Activity
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- Nirav was sitting with his father.
- Hello Nirav.
- Hi! Dad.
- Yes, I have. Father, how do humans excrete their body waste?
- Why are you looking confused? Do you have any questions?
- Ok. Humans have two kidneys and each kidney is supplied with blood from the artery. The kidneys remove from the blood wastes, and salts and excess water, and excrete them in the form of urine. This is done with the help of nephrons present in the kidney.
- The filtrated blood is carried away from the kidneys by the kidney vein. The urine from the kidney is collected by the ureter, and is passed to the urinary bladder. The urinary bladder collects and stores the urine. The urine collected in the bladder is removed from the body through an opening called the urethra.
- Did you understand it well?
- Yes
- Welcome.
- Thanks, Dad
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