Multiple choice general knowledge

Each square inch of human skin consists of --- feet of blood vessels.

  1. 10

  2. 20

  3. 5

  4. 15

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Each square inch of human skin contains approximately 20 feet of blood vessels when fully stretched out. The extensive network of capillaries, arteries, and veins supplies nutrients and oxygen to every skin cell.