Multiple choice

Name the hardest substance in our body.

  1. Enamel in the teeth

  2. Femur bone

  3. Ribs

  4. Vertebra
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Tooth enamel is the hardest and most highly mineralized substance in the human body. It covers the outer layer of each tooth and is composed primarily of hydroxyapatite, which is a crystalline calcium phosphate.

Keep practicing — related questions