Multiple choice general knowledge

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

  1. 10 feet

  2. 15 feet

  3. 20 feet

  4. 5 feet
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Each square inch of human skin contains approximately 20 feet of blood vessels when stretched out. This incredible density includes capillaries, arterioles, and venules that supply blood to the skin cells, regulate temperature, and support healing.

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