What is the cause of the visible black and blue marks that result from traumatic injuries?
A) Ruptured capillaries containing cellular waste products
B) Constriction and dilation of the arterioles diameters
C) Holding of large volumes of blood under high pressures
D) Reversible cell injury owing to decreased blood and oxygen

Question

Quizplus · Accepted Answer

The visible black and blue marks, known as bruises, result from traumatic injuries causing capillaries (small blood vessels) to rupture. This leads to blood leaking into the surrounding tissues, which is what causes the discoloration.

What Is the Cause of the Visible Black and Blue