Skip to main content
Go to homepage

Print Page

Skin, Hair, and Nails: The Body’s Protective Layer

Skin, hair, and nails are made of similar types of cells. They form the outer layer of the body, called the integumentary (in-teh-gyoo-MEN-tah-ree) system. It protects everything inside the body.

What Do Skin, Hair, and Nails Do?

Skin, hair, and nails do many jobs. They:

  • Block germs and dirt from getting inside the body and causing harm.
  • Protect the inside of the body from injury.
  • Help control body temperature.
  • Prevent water that's inside the body from evaporating.
  • Stop water from getting absorbed when we bathe or swim.

How Do Skin, Hair, and Nails Help Other Body Systems?

Other body systems rely on skin, hair, and nails to help them do their jobs:

  • Skin and nails block germs from getting inside the body, which helps the immune system.
  • Hairs in the nose help the respiratory system by catching tiny particles and keeping them out of the lungs.
  • Skin helps the endocrine system by absorbing vitamin D from the sun, which helps the body use calcium. Calcium is needed for strong bones.
  • Skin holds nerve endings that let us feel hot and cold, touch, and pain. This helps the nervous system respond to what’s happening inside and outside the body.

Reviewed by: Larissa Hirsch, MD
Date Reviewed: Nov 15, 2022

Lea este articulo en Español

What next?

By using this site, you consent to our use of cookies. To learn more, read our privacy policy.

Summit Mall Play Area
Answer Key:
Click to expand
There are 10 nurses in the picture.

And we have many more pediatric primary care providers in Northeast Ohio. You can meet some of them here.
Summit Mall Play Area
Answer Key:
Click to expand
The five differences are:
– Phone color
– Coat pocket
– Stethoscope earpiece color
– Stethoscope bell dot
– Clipboard paper color

Need help finding a doctor, choosing a location or getting a general question about Akron Children's answered? Call us or fill out the form and we'll help in any way we can.
Summit Mall Play Area
Answer Key:
Click to expand
The two matching doctors are 9 and 14.

With virtual visits, you can see our pediatric experts from the comfort of home or wherever you are.
Summit Mall Play Area
Answer Key:
Click to expand
The correct path:
The Correct Path
We offer many ways to get pediatric care all over Northeast Ohio. Use this page to find the right kind of care and the most convenient location for you.