6Review and Assessment 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.
7Epidermal Cells keratinocytes epidermal dendritic cells Merkel cells makes keratin, form layers of epidermisepidermal dendritic cellsward off infectionsMerkel cellstouch receptors
8Dermis dense, fibrous connective tissue papillary layer forms fingerprintsreticular layer
9Hypodermis fibrous connective tissue adipose tissue padding insulation energy storage
10Appendages of the Skin sudoriferous (sweat) glands sebaceous glands eccrineapocrinesebaceous glandshairnails
11Review and AssessmentFill 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.
15Injuries and Disorders of the Skin Chapter 3: Membranes and the Integumentary SystemLesson 3.3Injuries and Disorders of the Skin
16Injuries of the Skin decubitus ulcers burns bedsores caused by restricted blood supplyburnsfirst-, second- or third-degreecaused by heat, chemicals, electricity or UV radiationSuzanne Tucker/Shutterstock.com, JTeffects/Shutterstock.com, Naiyyer/Shutterstock.com
20Rule of 9’s 9% for both anterior/posterior of head/neck 18% for anterior and 18% of posterior of torso9% for a/p of EACH arm18% for a/p of EACH leg1% groin regionAdds up to 100%
21ProblemSmokey 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%
22Grafting of Skin Split-thickness skin graft 2 top layers of from epidermis, & dermisGraft from hidden donor siteHeld with a dressing, staples, small stitches.Covered 3 to 5 days.
24Infections of the Skin and Membranes viral infectionsherpes varicellaherpes zosterherpes simplex virus type 1 or type 2human papillomaviruswartsMaksym Bondarchuk/Shutterstock.com
25Infections of the Skin and Membranes fungal infectionsathlete’s footjock itchringwormtoenail fungusbacterial infectionsImpetigo – staph infectioncellulitis
26Inflammatory Conditions of the Skin psoriasisinvolves redness and irritationKenxro/Shutterstock.com
27Cancers of the Skin basal cell carcinoma squamous cell carcinoma Most common, most curable (grows slow)Overproducing cells in stratum basalesquamous cell carcinomaGrows quickly, can spreadSpiny layer
28Cancers of the Skin malignant melanoma ABCD rule Most serious Fleshy, colored, irregularABCD ruleNormal mole