1. Copyright © 2011 Wolters Kluwer Health | Lippincott Williams & Wilkins Chapter 45 Structure and Function of the Skin

2. Copyright © 2011 Wolters Kluwer Health | Lippincott Williams & Wilkins Healthy Skin Epidermis Basement membrane Dermis Subcutaneous tissue

3. Copyright © 2011 Wolters Kluwer Health | Lippincott Williams & Wilkins Question Tell whether the following statement is true or false: Subcutaneous tissue is also known as the hypodermis.

4. Copyright © 2011 Wolters Kluwer Health | Lippincott Williams & Wilkins Answer True Because it lies deep to/underneath/below the dermis, the subcutaneous tissue is also referred to as the hypodermis.

5. Copyright © 2011 Wolters Kluwer Health | Lippincott Williams & Wilkins Epidermal Cells Keratinocytes Melanocytes Langerhans cells (macrophages)

6. Copyright © 2011 Wolters Kluwer Health | Lippincott Williams & Wilkins Dermis Provides support and nutrition

7. Copyright © 2011 Wolters Kluwer Health | Lippincott Williams & Wilkins Provides support, insulation, energy store Subcutaneous Tissue

8. Copyright © 2011 Wolters Kluwer Health | Lippincott Williams & Wilkins Question In which layer of the skin are most of its structures contained? a.Cutaneous b.Epidermis c.Dermis d.Hypodermis

9. Copyright © 2011 Wolters Kluwer Health | Lippincott Williams & Wilkins Answer c.Dermis The epidermis contains many layers of keratinized squamous epithelium and melanocytes (that produce pigment); the hypodermis contains lots of blood vessels and fatty tissue; the dermis contains most of the stuctures (hair, sweat glands, piloerector muscles, immune cells, blood vessels, and neurons).

10. Copyright © 2011 Wolters Kluwer Health | Lippincott Williams & Wilkins Question Tell whether the following statement is true or false: Sebacious glands are a type of sweat gland.

11. Copyright © 2011 Wolters Kluwer Health | Lippincott Williams & Wilkins Answer False Sebaceous glands are oil producing glands that are adjacent to hair follicles. Sweat glands include apocrine (these glands also join a hair follicle, producing thicker sweat) and eccrine/merocrine glands. Eccrine sweat glands are the most numerous (you have around 4 million); they open directly to a sweat pore on the skin’s surface.

12. Copyright © 2011 Wolters Kluwer Health | Lippincott Williams & Wilkins Manifestations of Skin Disorders Rashes Lesions –Blisters –Calluses –Telangiectases Pruritus (itch)