1. What Are the Functions and Structures of the Skin?
Introduction to the Human Body
Ms. De Los Rios
6h Grade
The Skin
Essential Question:
How Does your Body Work?
What Are the Functions and Structures of the Skin?
Pgs

2. Vocabulary 11.6 Epidermis- The outer layer of the skin
Melanin- Deep cells in the epidermis, pigment that colors the skin.
Dermis- The inner layer of the skin.
Pore- Openings that allow sweat to reach the surface.
Follicle- Structure in the dermis of the skin from which a strand of hair grows.

3. What are the Functions and Structures of the Skin?
The skin is part of the _______________ system.
The integumentary system includes:
Hair
Nails
Sweat glands
Oil glands.

4. Functions of the Skin pg. 441
Skin helps regulate body temperature through perspiration and the enlarging of blood vessels.
Perspiration is also a means of eliminating some waste materials from the body.
Gather information about the environment.
Produce vitamin D
The skin is made up of two layers that form a protective barrier, keeping harmful substances outside and important substances such as water and other fluids inside the body. *
Nerves in the skin gather information from the environment about pressure, temperature, and pain.*
Some skin cells produce vitamin D in the presence of sunlight.*

5. What are the Functions and Structures of the Skin? Pg. 442
Together an outer layer and an inner layer perform all the skin’s functions.
The epidermis is the outer layer of the skin, which helps protect your skin.
Some cells deep in the epidermis produce melanin, a pigment that colors the skin.
The dermis is the inner layer of the skin, which includes nerves, blood vessels, sweat glands, hairs, and oil glands.
Pores are openings that allow sweat to reach the surface. Strands of hair grow within the dermis in follicles. Oil produced in glands around the follicles keeps the surface of the skin moist and the hairs flexible.

6. Fig. 3 The Skin pg. 443
Structures of the Skin