13. Briefly describe how the urinary system, respiratory system, digestive system and integumentary system contribute to excretion of waste products from the human body (in 60-80 words
Answers
Answer:
Excretory System
The body must excrete waste to maintain itself. There are four primary methods of waste excretion in humans.
Explanation:
respiratory system
when we exhale we give out CO2 gas along with some water vapour so CO2 is present in the form of carbon monoxide which is dangerous for our body so it helps us to remove it .
Urinary system
when the blood is filtered from the kidneys it take out the unnecessary items likes urea excess of water and other salts which are not required for the body . It then reaches the urinary bladder where it is stored temporarily and pass out when we urge to pass it out .
Digestive system
it passes the undigested food from the body in the form of feases . After the digestion is completely done (the food is in large intestine) water and drugs are absorbed and the rest material is passed out of the body .