Which of the following statements regarding normal gas exchange in the lungs is correct?Question 9Answera.Oxygen and carbon dioxide diffuse across the alveolar walls and capillaries.b.Blood that returns to the lungs from the body has low levels of carbon dioxide.c.The actual exchange of oxygen and carbon dioxide occurs in the capillaries.d.The oxygen content in the alveoli is highest during the exhalation phase.

Which statements about gas exchange in the human lung are true?When you inhale there is a higher concentration of carbon dioxide in the alveoli than in the bloodOxygen and carbon dioxide diffuse through the walls of the alveoliOxygen diffuses from the blood into the alveoliWhen you inhale there is a higher concentration of oxygen in the alveoli than in the blood

Recall what happens during gas exchange in the alveoli of the lungs. Carbon dioxide diffuses from air to bloodOxygen diffuses from air to bloodCarbon dioxide diffuses from blood to airOxygen diffuses from blood to air

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

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

For gas exchange to take place, the alveoli must have a ____i____ concentration of oxygen whilst the surrounding capillaries have a ____ii____ concentration of oxygen.