1. Do Now 9/2/14
List the layers of the epidermis from most superficial to most deep.
Describe the structural differences between thin and thick skin.
Describe the functions of the serous and synovial membranes and list a location where you could find each one.
Explain at least 3 reasons why we have skin.

2. New School Supply!!
I will expect for you to have a pad of sticky notes sitting on your desk at the beginning of every class.

3. Recap - Epidermis
Come Let’s Get Sun Burned

4. Keratin & Melanin
What is the purpose of each? What causes different skin color? What layers are keratinized?

5. Dermis Contains sweat glands and oil glands
Comprised of connective tissue
Innervated = many nerve fibers
Vascular = contain blood vessels

6. 1. Papillary layer (papilla = nipple)
Areolar connective tissue
Dermal papillae – projections of the dermis
Interlock and increase contact area between epidermis & dermis
Contain capillaries to provide nutrients from blood to the epidermis
Contain sensory receptors

7. 2. Reticular layer (reticular = net/web)
Dense connective tissue
Fibers surround the structures in the dermis (hair follicles, glands, nerves, blood vessels, etc)
*Different than reticular connective tissue*

8. 2. Reticular layer (reticular = net/web)
Striae = stretch marks that result due to fibers torn or stretched past their capacity
Flexibility of the dermis is decreased by UV light exposure and aging
WRINKLES

9. Vasoconstriction vs. Vasodilation
Define both terms
Describe the effect on the body
Relation to surface of skin
Qualitative observations
When would each be appropriate?

10. Subcutaneous Layer (hypodermis)
Not actually part of the integument
Areolar and adipose tissue
Protects the body, stores energy, and provides insulation
Vascular
Drugs
Thicker in women

11. Poster Time
Include a visual diagram of the layers and sub-layers of the skin (epidermis, dermis, subcutaneous)
You will also include a hair follicle, arrector pili muscle, and glands at a later time – so save room for them!
Indicate where keratinization begins on the diagram and the purpose of this process
Indicate where keratinocytes, melanocytes, and tactile cells can be found & include their purposes
Include blood vessels and describe what happens when vasodilation and vasoconstriction occurs

12. Coming up… Integument poster due Wednesday, 9/10
Integumentary BIG QUIZ on Friday, 9/12
Hair lab soon…