Question
Which gas is exhaled out from the body?
- Nitrogen
- Oxygen
- Carbon dioxide
- Helium
Hint:
The waste product of the body is removed through respiration.
The correct answer is: Carbon dioxide
- Carbon dioxide is exhaled out from the body.
- Respiration is the process of movement of oxygen from outside to the lungs and removal of carbon dioxide from the lungs to the outside.
- This process involves the highly organized respiratory system which is composed of the lungs, trachea, bronchi, bronchioles, etc. These organs coordinate to perform this function.
- Carbon dioxide is a waste product of the body. It is carried from the tissues to the lungs where it is diffused out of the system.
The process of respiration involves two acts occurring simultaneously, that is, removal of carbon dioxide and inhaling of oxygen.
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Mechanical breakdown is crucial for the enzymes to act on it. Larger the surface area, the easier it is for enzymes to breakdown the substances.
Which organ is used to break down food mechanically?
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Which of the following is the accessory organ of the digestive system?
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