The respiratory membrane is a combination of ________.
A. respiratory bronchioles and alveolar ducts
B. alveolar and capillary walls and their fused basement membranes
C. atria and alveolar sacs
D. respiratory bronchioles and alveolar sacs
Answer:B
The respiratory membrane is a combination of ________.
A. respiratory bronchioles and alveolar ducts B. alveolar and capillary walls and their fused basement membranes C. atria and alveolar sacs D. respiratory bronchioles and alveolar sacs