Human Body Facts5

Human Body Facts Quiz 5

Human Body Facts Quiz 5  View All Quizzes 0% The ______ of the eye is as unique as fingerprint. Iris Lens Pupil Lashes Correct! Wrong! Continue >> The hardest substance in the body is _________. Skull Tooth enamel Knee joint None of these Correct! Wrong! Continue >> _________are the longest cells in the human body.…