Respiratory process occurs in two phases, what are those two major steps of
respiration? Describe each one.
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The process of breathing, or respiration, is divided into two distinct phases. The first phase is called inspiration, or inhaling. When the lungs inhale, the diaphragm contracts and pulls downward. At the same time, the muscles between the ribs contract and pull upward.
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(1) The first phase is inhaling. When the lungs inhale the diaphragm contacts and pulls downward . At the same time the muscles between ribs contract and pull upward . This decreases the pressure inside . As a result the air rushes into lungs.
(2) The second phase is exhaling. When the lungs exhale the diaphgram relaxes and pressure increases . As a result the lungs contract and air is forced to rush out.
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