The document discusses the integumentary system and skin organ. It describes the integumentary system as forming a protective barrier around the body and regulating temperature. The skin organ is the major organ of the integumentary system, forming a barrier between external and internal environments. The skin has three layers - the epidermis, dermis and subcutaneous layer. Each layer has specific cell types and functions that contribute to the skin's role in protection and regulation.

1. Integumentary System
&
The SKIN ORGAN
BY: GERNELL AUSTIN
6/16/09

2. INTEGUMENTARY SYSTEM
 Correct Pronunciation (in-teg-you-MEN-tah-ree)
 Forms a protective two-way barrier around
the entire body and aids in temperature
regulation.
 Made up of 5 structures: the SKIN
organ, hair, nails, sweat glands, and
sebaceous glands.

3. THE SKIN ORGAN
 The major organ of the
integumentary system,
forming a barrier
between the external &
internal environments.
 Top layer of skin made
of epithelium tissue,
which are composed of
close-packed cells that
form a covering.

4. THE MAKE UP OF SKIN
 There are three layers
 Epidermis- thin, outer
membrane layer.
 Dermis- middle, fibrous
connective tissue layer.
 Subcutaneous-
innermost layer
containing fatty tissue.
 Dermatology (der-mah-TALL-oh-
jee)- is the study of skin &
the integumentary
system.

5. THE BREAK DOWN- EPIDERMIS
 Epidermis- consist of a type
of epithelial tissue called
stratified squamous
epithelium, which is free of
blood and depends on
deeper layers for
nourishment.
 Basal layer-deepest layer of
the epidermis, which forms stratified squamous epithelium
new cells that push old cells
to the top.
 Melanin- contained in the
basal layer and produces a
Black pigment that is
responsible for the coloring
of skin and also protects
against ultraviolet rays of the
sun.

6. THE BREAK DOWN- DERMIS
 Dermis- middle layer of
skin with a very good
blood supply -“true skin”.
 Collagen Fibers- glue-
like protein contained
within the dermis and
gives connective tissues
its strength.
 Dermis houses…
 Hair follicles
 Sweat glands
 Blood vessels
 Nerve fibers
 Muscle fibers
 And other elements

7. THE BREAK DOWN- SUBCUTANEOUS
 Subcutaneous- also
called “hypodermis”, is
the deepest level of
skin and composed of
fat cells called
lipocytes.
 Lipocytes- protects the
deeper tissues of the
body & acts as
insulation from heat and
cold.

8. ACCESSORY ORGANS & SKIN DISORDERS
 Accessory Organs of the SKIN- are the
anatomical structures within the dermis such as
hair, nails, sebaceous glands and sweat glands.
 Some skin disorders are rosacea, eczema, and
strawberry hemangioma. All of which can be
managed by help from a dermatologist.
 Lets all protect our skin by keeping it
clean, properly moisturized and protected
from extreme heat or cold at all times. 
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