Gas exchange between the inspired air and the blood occurs at the ______ of the lungs.Multiple choice question.alveolirespiratory bronchiolestracheaprimary bronchi

Which structure is the site of gas exchange between inhaled air and the bloodstream?Multiple choice question.alveolusprimary bronchustrachealobar bronchus

Gas exchange between air in the alveoli and blood in pulmonary capillaries is called Blank______.Multiple choice question.cellular respirationinternal respirationexternal respiration

During inhalation, air moving into the lobar bronchi comes from the ______ bronchi.Multiple choice question.respiratorysegmentalmainintralobular

Air passes from a secondary bronchus into a(n) ______.Multiple choice question.trachearespiratory bronchiolealveolustertiary bronchus

Multiple Choice QuestionCarbon dioxide diffuses from the ______ to the ______ during external respiration.Multiple choice question.blood; alveolar airalveolar air; blood