The lungs are primarily responsible for providing oxygen and removing oxygen from the blood. This organ is able to work efficiently because of the presence of microscopic sacs called alveoli. The walls of the alveoli are one cell thick and…
The lungs are primarily responsible for providing oxygen and removing oxygen from the blood. This organ is able to work efficiently because of the presence of microscopic sacs called alveoli. The walls of the alveoli are one cell thick and…