Homework Help: Science: Biology: Human Skin

Epidermis

1. Protects you from diseases.
2. Keeps you from gaining and losing H2O.

Dermis

• Oil Glands
  1. 1. Keeps water from entering your body.
  2. Keeps skin soft and moist.
• Hair
  1. Traps a small amount of body heat next to you.
  2. Keeps you warm.

Blood Vessels

1. Controls body temperature by expanding and contracting.

Sweat Glands

1. Controls body temperature by evaporation.
2. Removes excess water and salt.

Homework Help: Science: Biology

For Further Reading