The frontal and parietal bones of the skull are especially susceptible to

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus

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.