This helps the pleurae glide smoothly as you breathe. "These layers keep your bare lungs from rubbing against the wall of your chest cavity every time you breathe in. When the pleurae are swollen ...
This helps the pleurae glide smoothly as you breathe. "These layers keep your bare lungs from rubbing against the wall of your chest cavity every time you breathe in. When the pleurae are swollen ...