Integumentary System

​INTEGUMENTARY SYSTEM

Open Ended

How do we keep our integumentary system healthy?

Open Ended

Why is our integumentary system important?

​FUNCTIONS:

• It protects the body’s internal living tissues and organs.

• It protects the body against microorganisms and invasion by infectious organisms.

• It helps dispose of waste materials.

• It acts as a receptor for touch, pressure, pain, heat, and cold.

• It stores water and fat.

• It helps in the production of vitamin D.​

Science and Health 6​

Multiple Choice

Which of the following statements is TRUE about the skin?

• It is the largest organ of the body.

• It is made up of four body tissues.

• It has three layers: epidermis, dermis, and subcutaneous layer.

• All of the statements.

​Structure of the skin:

• The skin is the main organ of the “integumentary system”.

• SKIN is composed of four types of tissues:

  Epithelial Tissues, Connective Tissues, Muscles Tissues  Nerve Tissues

Science and Health 6​

​Structure of the skin:

1.)EPITHELIAL Tissue -covers the body surface

2.)CONNECTIVE Tissue -provides support and protection,

3.)MUSCLE Tissue -involved in body movement, 

4.)NERVE Tissue -forms body communication network

Science and Health 6​

Multiple Choice

Which of the following statements is NOT true about the epidermis?

• It is the outermost layer of the skin.

• It is also called as corium, and is referred as the 'true skin'.

• It is the layer of the skin that sheds.

• It blocks microorganisms from entering the skin.

​Epidermis

​▪outer layer of the skin

▪consists of epithelial cells

▪The outer layer of epidermal cells contains protein called “KERATIN” which water proofs and protects the cells and tissues that lie underneath.

Science and Health 6​

Fill in the Blanks

The

absorbs light energy, protecting the inner cells of our body from the damaging effect of ultraviolet rays from the sun.

Multiple Choice

Which of the following statements is NOT true about the dermis?

• It consists of connective tissue that stores fats and helps body retain heat.

• It is the second layer of the skin that is 15 to 40 times thicker than the epidermis.

• It consists of connective tissues that prevent the skin from tearing.

​Dermis

​▪second layer of the skin

▪directly between the epidermis and the subcutaneous layer

▪usually 15 to 40 times thicker than the epidermis.

​

Science and Health 6​

​Dermis

​

▪consists of connective tissues that prevent the skin from tearing and enables the skin to return to it’s normal state after being stretched.

▪contains structures including nerve cells, muscle fibers, sweat glands, oil glands, and hair follicles

Science and Health 6​

​Subcutaneous layer

​

▪layer of connective tissue that stores fats and helps the body retain heat.

Science and Health 6​

​HAIR

​

▪threadlike outgrowths from the follicles that are found in the dermis

▪made up of keratin and melanin

▪keeps dusts, insects and other unwanted things out of the body

Science and Health 6​

Types of ​HAIR

Science and Health 6​

Types of ​HAIR

Science and Health 6​

Types of ​HAIR

Science and Health 6​

​NAIL

​

▪hard, thin covering on the upper surface of the ends of the fingers or toes

​

▪made of keratin

​

▪ The fingernail generally serve two purposes:

-serves as a protective plate

- enhances sensation of the fingertip

Science and Health 6​

Multiple Select

What makes up the integumentary system?

• hair

• skin

• liver

• nail