This is a free preview. For full access
Growth, Development, and Reproduction of Organisms: Human Body Systems
Nails and Hair
Description
Nails and Hair
Nails and hair are more than just parts of our appearance; they are made of a strong protein called keratin and play important roles in protecting our bodies. Hair helps keep us warm and protects our skin from sunlight. Nails protect the tips of our fingers and toes and help us do...
Show More
Transcript
Your nails and hair do more than just make you look good—nails protect your fingertips, and hair helps keep you warm.
Nails are made of keratin, a strong protein. They grow from the nail bed as new cells form, pushing older ones forward.
This growth keeps nails functional and able to recover from wear, while their structure helps to ...
Show More