PROJECT- MODEL OF BREATHING

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Hi guys! this is my second post that i have published now today we are making a science project through which we can understand how our body inhale and exhale air and what is the role of respiratory system?
Project-Model Of Breathing(MOB)
Objective:-To understand the concept of respiratory system by making a working model of MOB.
Material used:-                              
  1. Plastic bottle 
  2. 1big straw
  3. 1big ballon
  4. 2 small ballon
  5. Y-shaped connector   
  6. 2 small rubber band
  7. Tape
  8. Scissor
HOW TO MAKE A WORKING MODEL?
  • Take a plastic bottle and cutted half part of the bottle.
  • Take a plastic straw and cutted half from the centre then make a hole in the centre of bottle cap with the help of scissor.
  • Insert straw in the bottle cap and attach Y-shaped connector at the bottom of straw.
  • fix 2 small ballons in the two legs of Y-shaped connector and tie up rubber band on both of them.
  • After inserting straw and Y-shaped connector in the bottle close the cap of plastic bottle.
  • Take a big ballon and cutted half.
  • Take cutted half part of ballon and fix it on bottom of the bottle.
  • Paste a round tape 2 times around the bottle so that ballon can fix it properly.

 https://en.wikipedia.org/wiki/Respiratory_system
WHAT WE HAVE LEARNT:-
The respiratory system is a system  shows how you breathe and it is also known as ventilatory system.We inhale air with the help of nose and through wind pipe it goes to our lungs when we inhale diaphragm moves down as because of air present in lungs and when we exhale diaphragm moves up as because of air released through nose.
Lungs are the major organ in the respiratory system.
A person breathe 20,000 times a day.
The respiratory system uses the:-
Nose,Mouth,Trachea,Bronchi,Bronchioles and Alveoli, to help the person breathe.
Oxygen can never be permanently stored in the body,because it is used up by the parts and the organs in the human body. 

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