The millions of tiny air sacs in the lungs are called

Alveoli

Explanation:

Explanation:

Alveoli are tiny air sacs in your lungs that take up the oxygen you breathe in, and keep your body going.

GL :)

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.