🫧↔️💨

#alveolus #air sac #gas exchange #respiration #oxygen #carbon dioxide #pulmonary

🫁🫧💨

#pulmonary alveolus #lungs #air sac #gas exchange #respiration #breathing

🫁💨⚪

#lung bulla #pulmonary bulla #emphysema #lung disease #pulmonology #air sac

🫁⚪↔️💨

#pulmonary alveolus #gas exchange #oxygen exchange #carbon dioxide exchange #lung function #air sac