Question

Describe the gaseous exchange in human body according to class 7.
Please tell fast as tomorrow is my exam

Answer 1

Answer:

When the human take the oxygen from the atmosphere and carbon dioxide released from the heart ,then it is sent to the lungs where it is exchange with the oxygen and purified blood then carbon dioxide rich blood go to the lungs and become purifying. Toxic substances go out of the body through urine & Pure blood and gaseous form go to the heart.

I hope it will help you...!

Answer 2

Answer:

the gaseous exchange takes place through lungs

Explanation:

when we inhale the diaphragm moves upwards and when we exhale the diaphragm moves downwards this is process of respiration.the taking in of air full in oxygen is called inhalation and breathing out of air rich in carbon dioxide is called as exhalation