✋Introduction
The human gas exchange system and breathing
In this lesson: I can describe how humans breathe, including the roles of different parts of the gas exchange system. The structures and functions of the gas exchange system in humans. The mechanism of breathing, including the role of muscles, to move air in and out of the lungs.
Lesson outcome
Waxaan sharxi karaa sida aadanuhu u neefsado, oo ay ku jiraan doorka qaybaha kala duwan ee nidaamka is-weydaarsiga gaaska.