Fill in the Blanks Body parts - AnatomyOnline version Choose the best option by Jesús Alejandro Fuentes Osorio 1 melatonin hair skin The basic function of the is protect our bod y 2 eyes nails hair The can have different colors like brown , blue , or green . 3 nose fingers eyes This sense is linked to your memory and your can help you remember certain scents and trigger memories associated with the m 4 eye nose ear The human is capable of detecting sounds as low as 20 Hz and as high as 20 , 000 H z 5 hands feet mouth An interesting fact about is that they contain over 27 bones , making up around one - quarter of all the bones in the human bod y