Encceja Ensino Fundamental Practice Questions - Exame Nacional Para Certificação De Competências De Jovens E Adultos - Ensino Fundamental Exam

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During physical exercise, a person's breathing rate increases substantially to supply working muscles with oxygen and eliminate carbon dioxide. In which microscopic structures of the human respiratory system does this crucial exchange of respiratory gases (hematose) take place?

In the nasal cavities and pharynx Along the cartilage rings of the trachea Inside the main bronchi of the upper chest In the pulmonary alveoli surrounded by blood capillaries

Correct Answer:

In the pulmonary alveoli surrounded by blood capillaries

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