The respiratory system helps in the exchange of the gases through respiration which is needed for the survival of human beings. It also helps in the acid-base homeostasis of the body. The first process of respiration is pulmonary ventilation which is divided into two phases: inspiration and expiration.

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Chapter 21, Problem 8CYR

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The respiratory system helps in the exchange of the gases through respiration which is needed for the survival of human beings. It also helps in the acid-base homeostasis of the body. The first process of respiration is pulmonary ventilation which is divided into two phases: inspiration and expiration.

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