Answer:
We take air through our nostrils. When we inhale air, it passes through our nostrils into the nasal cavity. From nasal cavity the air reaches our lungs through the wind pipe. Lungs are present in the chest cavity. This cavity is surrounded by ribs on the sides. A large muscular sheet called diaphragm forms the floor of the chest cavity. Breathing involves the movement of the diaphragm and the rib cage. 
You need to login to perform this action.
You will be redirected in
3 sec
