The photomicrograph displays a section of the human gas exchange system, with one tissue marked P. Which row is right?
- Apart of gas exchange system: bronchus; function of tissue P: regulates the amount of air reaching the lungs
- Bpart of gas exchange system: bronchus; function of tissue P: provides support and prevents collapse
- Cpart of gas exchange system: bronchiole; function of tissue P: regulates the amount of air reaching the lungs
- Dpart of gas exchange system: bronchiole; function of tissue P: provides support and prevents collapse