This pulmonary disorder is a chronic, progressive condition…

This pulmonary disorder is a chronic, progressive condition that may be caused by long term cigarette smoking. It is characterized by the destruction of the alveoli of the lungs, which reduces the surface area for gas exchange with the pulmonary capillaries.

4 questions: Name the structure (the ENTIRE space) indicated…

4 questions: Name the structure (the ENTIRE space) indicated by the bracket & label A? [a] Name the ENTIRE structure  indicated by the bracket & label B? [b] Name the SPECIFIC organ AND the SPECIFIC part of the organ indicated by the arrow and label C? [c] Name the SPECIFIC structure (indentation) indicated by the curved dotted line in label D? [d]