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Pertanyaan

The respiratory system, in anatomy and physiology, are organs that deliver oxygen to the circulatory system to be transported to all body cells. The respiratory and circulatory system work together to deliver oxygen to cells and remove carbon dioxide in a two-phase process called respiration.

The first phase of respiration begins with breathing in, or inhalation. Inhalation brings air from outside the body into the lungs. Oxygen in the air moves from the lungs through blood vessels to the heart, which pumps the oxygen-rich blood to all th body-Oxygen then moves from the bloodstream into cells, which completes the first phase of respiration. In the cells, oxygen is used in a separate energy-producing process called cellular respiration, which produces carbon dioxide as a by product.

The second phase of respiration begins with the movement of carbon dioxide from the cells to the bloodstream. The bloodstream carries carbon dioxide to the heart, which pumps the carbon dioxide-laden blood to the lungs. In the lungs, breathing out, or exhalation, removes carbon dioxide from the body, thus completing the respiration cycle.

How does complete respiration cycle work?

  1. It delivers oxygen to the cells and removers carbon dioxide from the cells

  2. It works apart from respiratory and circulatory system

  3. It removes carbon dioxide from the human body

  4. It delivers oxygen to the circulatory system

  5. It inhales air from outside the human body

Y. Yuli.Widya

Master Teacher

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Pembahasan

Berdasarkan kalimat “The respiratory and circulatory system work together to deliver oxygen to cells and remove carbon dioxide in a two-phase process called respiration” yang terdapat pada kalimat terakhir di paragraf pertama, dapat diketahui bahwa sistem pernafasan adalah proses dua fase yang terdiri dari pengantaran oksigen ke sel dan pembuangan karbon dioksia sehingga pilihan jawaban (A) adalah yang paling tepat.

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