Question 1
Which chemical secreted in the alveoli reduces surface tension?
◦ oxyhemoglobin
◦ pulmonary surfactant
◦ carboxyhemoglobin
◦ secretory IgA
◦ mucus
Question 2
Which enzyme, produced by cells in the lungs, works with the endocrine system to influence urine production?
◦ carbonic anhydrase
◦ amylase
◦ angiotensin-converting enzyme
◦ creatine phosphokinase
◦ lactic dehydrogenase