Introduction To Integumentary

Skin Is In!

Beauty

• Do me a favor…• Take a look at the person next to

you • First, comment on how good they

look today• Unless they look really bad… in

which case a white lie won’t hurt

• Second, ask very politely how much makeup, hair dye, hair gel and perfume they are wearing today

Beauty

• With that information try to come up with an estimate how much humans spend per year on beauty products• Go ahead• You can do it• Do you want the answer?• It is a 160 billion dollar business

Beauty

• Some interesting facts about “beauty”…• Americans spend more per year on

beauty products than they do education• Babies will smile longer at a female face

that is considered “attractive” • In a comprehensive study of 52 different

cultures across 5 continents, males chose beauty as the most important attribute in a female partner and females chose beauty as the second most important attribute in a male partner

Introduction to Integumentary

• The surprising thing about beauty is that it revolves around one body system• To understand this system that has

become an obsession in our culture (and others) we really have to understand the integumentary system• The integumentary system is a

system designed to protect the body that is composed of the skin and its accessories (hair, nails etc)

Introduction to Integumentary

• It is a system that is constantly bombarded by different types of attacks• UV radiation, microorganisms,

viruses, chemicals, plants and animals are all trying to attack this system • This is why it accounts for so much

of your body weight• Nearly 16% of a typical adult is

devoted to this important system

Two Components

• The integumentary systems is made of two major components• Each is separate and has

different functions• These two components account

for the two square meters of integument

Two Components

• The cutaneous membrane is commonly referred to as the skin• The cutaneous membrane is

made of multiple components • The epidermis can be referred to

as the superficial epithelium• The dermis is the underlying

area of connective tissues that bind the epidermis to the body

Two Components

• The accessory structures are the components of the integumentary system that are not skin• These include hair, nails and

multicellular exocrine glands• These structures often are found

in the skin with parts of their structure extending through the skin to the outer environment

Two Components

• A third component is sometimes associated with the integumentary system…• I know I lied…• They hypodermis is a layer of

loose connective tissue that separates the skin from other organs • For our purposes we will include

this as part of the Integumentary system

Video

• https://www.youtube.com/watch?v=AhbPPd-YeiU