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​

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