Transcript The Integumentary System - UNT's College of Education

The Integumentary System
More Than Skin Deep
TAKS
• TAKS Objective 2 – The student will
demonstrate an understanding of
living systems and the environment.
TEKS
• The student knows that, at all level of nature, living
systems are found within other living systems, each with
its own boundary and limits. The student is expected to:
(A) interpret the functions of systems in organisms
including circulatory, digestive, nervous, endocrine,
reproductive, integumentary, skeletal, respiratory,
muscular, excretory, and immune;
(B)compare the interrelationships of organ systems to
each other and to the body as a whole;
Engage
Fingerprinting
• Are your fingerprints the same on your five fingers?
• Do any of your fingerprints have the same pattern as those of your
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three classmates?
Why is a fingerprint a good way to identify a person?
Where else on your body might you have the kinds of skin patterns
seen on your fingertips?
What would happen if you were missing an organ?
Would you consider skin to be an organ? Why or why not?
Our skin can help identify who we are, but what are some other
functions of our integument?
Explore
• Human Epidermal Cells Lab
• MD Anderson Sun SAFETY
Explain
• What is skin?
• What are the two layers of the skin?
• Which layer is on the top closest to the
surface of the skin?
• What is the deepest layer of the skin
called?
Explain: What is the Integument?
• The outer most covering of the animal
body.
• Largest organ of the body.
• Covers the entire visible surface of the
body including the SKIN, as well as, hair,
fingernails, and toenails
What are the 2 layers of skin?
• Skin has 2
main layers
– Epidermis
(outer layer)
– Dermis
(inner layer)
Two Layers of Skin
• Epidermis
– Layer of skin above the dermis.
– Part that sunburns, tans, wrinkles and freckles
– Epithelial cells-dead
– Squamous cells between epithelial and basal
– Contains Basal Cells-Base of this layer
– Melanocytes – make melanin that produces a
tan, makes freckles and moles.
Two Layers of Skin
• Dermis
– Deepest layer of
skin
– Contains blood,
lymphatic vessels,
nerves, nerve
endings, sweat
glands, oil glands
and hair follicles
The Skin and Its Functions
• Protection for underlying tissues
• Sense organ
• Maintains a balance of chemicals in the
body
• Regulates your body temperature to
maintain homeostasis
– Hot - sweat
– Cold – shiver
What are the parts?
• A. Basal Cells/
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Melanocytes
B. muscle
C. sebaceous gland
D. hair shaft
E. epidermis
F. dermis
G. subcutaneous
tissue
H. fat
I. arterial blood vessel
J. sweat gland
K. hair follicle
Elaborate
• Burn Brochures