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Explain the mechanism of breathing.
a. Inspiration means the process of expelling air into the lungs .
b. Inhalation means the process of taking air into the lungs .
c. Exhalation refers to the process of expelling air from the lungs .
d. Expiration refers to the process of taking air into the lungs .
e. Inhalation occurs with the of diaphragm muscles, and exhalation occurs with the of diaphragm muscles.
f. During inhalation, the , and during expiration, the .
g. During inspiration the ribs moves in and during expiration the ribs move downwards.
h. During inspiration, the volume of , and during expiration, the volume of thoracic cavity decreases.
i. During inspiration, air enters the lungs through the nose, and during expiration, air goes out of the lungs through the nose .
j. Breathing is the process of inhaling and exhaling the gases through the nostrils .