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Lesson 3.2 The Integumentary System Chapter 3: Membranes and the Integumentary System.

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Presentation on theme: "Lesson 3.2 The Integumentary System Chapter 3: Membranes and the Integumentary System."— Presentation transcript:

1 Lesson 3.2 The Integumentary System Chapter 3: Membranes and the Integumentary System

2 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. protects against –abrasion –chemical damage –drying out –UV radiation damage regulates body temperature Functions of the Integumentary System

3 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. Functions of the Integumentary System

4 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. epidermis dermis hypodermis Anatomy of the Skin

5 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. Layers of the Epidermis

6 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. True or False? 1. The dermis is the superficial layer of the skin. 2. The skin helps regulate body temperature. 3. The epidermis has three layers. 4. The hypodermis is above the dermis. 5. The skin protects against UV radiation. Review and Assessment

7 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. keratinocytes –makes keratin, form layers of epidermis epidermal dendritic cells –ward off infections Merkel cells –touch receptors Epidermal Cells

8 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. dense, fibrous connective tissue papillary layer –forms fingerprints reticular layer Dermis

9 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. fibrous connective tissue adipose tissue –padding –insulation –energy storage Hypodermis

10 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. sudoriferous (sweat) glands –eccrine –apocrine sebaceous glands hair nails Appendages of the Skin

11 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. Fill in the blanks with: hypodermis, keratinocytes, sweat, or papillary. 1. Eccrine is a type of _______________ gland. 2. _______________ produce keratin. 3. Adipose tissue is found in the _______________. 4. The _______________ of the dermis forms fingerprints. Review and Assessment

12 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. Hair Follicle

13 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. Shape of follicle = hair texture –Straight = round –Wavy = oval –flat = curly Color based on melanin –(eumelanin, pheomelanin) –The Truth about Gingers!The Truth about Gingers! Hair basics

14 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. Nail

15 Lesson 3.3 Injuries and Disorders of the Skin Chapter 3: Membranes and the Integumentary System

16 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. decubitus ulcers –bedsores –caused by restricted blood supply burns –first-, second- or third-degree –caused by heat, chemicals, electricity or UV radiation Injuries of the Skin Suzanne Tucker/Shutterstock.com, JTeffects/Shutterstock.com, Naiyyer/Shutterstock.com

17 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. Name that Burn

18 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. This Burn!

19 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. That Burn!

20 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. 9% for both anterior/posterior of head/neck 18% for anterior and 18% of posterior of torso 9% for a/p of EACH arm 18% for a/p of EACH leg 1% groin region Adds up to 100% Rule of 9’s

21 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. Smokey Susie fell asleep in bed with a bottle of Jack, which spilled all over her, then was ignited with her cigar. She had burns on her anterior and posterior right arm, entire head/neck, anterior torso, as well as anterior right leg. How badly was Susie singed? –Answer: = 45% Problem

22 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. Grafting of Skin Split-thickness skin graft –2 top layers of from epidermis, & dermis Graft from hidden donor site Held with a dressing, staples, small stitches. Covered 3 to 5 days.

23 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc.

24 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. viral infections –herpes varicella herpes zoster –herpes simplex virus type 1 or type 2 –human papillomavirus warts Infections of the Skin and Membranes Maksym Bondarchuk/Shutterstock.com

25 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. fungal infections –athlete’s foot –jock itch –ringworm –toenail fungus bacterial infections –Impetigo – staph infection –cellulitis Infections of the Skin and Membranes

26 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. psoriasis –involves redness and irritation Inflammatory Conditions of the Skin Kenxro/Shutterstock.com

27 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. basal cell carcinoma –Most common, most curable (grows slow) –Overproducing cells in stratum basale squamous cell carcinoma –Grows quickly, can spread –Spiny layer Cancers of the Skin

28 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. malignant melanoma –Most serious –Fleshy, colored, irregular –ABCD rule Cancers of the Skin

29 Permission granted to reproduce for educational use only.© Goodheart-Willcox Co., Inc. Skin Part TWO


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