BIO 180-5 s04 bb - VII. Integumentary System VII....

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Unformatted text preview: VII. Integumentary System VII. Integumentary System A. Introduction 1. Components a. Cutaneous Membrane- Epidermis- Dermis- Hypodermis VII. Integumentary System A. Introduction 1. Components b. Associated structures- Hair- Nails- Glands- Specialized receptors VII. Integumentary System A. Introduction 2. General Characteristics- Largest organ of body (16% of body weight)- Most exposed organ VII. Integumentary System B. General Function VII. Integumentary System B. General Function- Protection- Production- Regulation- Detection- Reservation- Indication C. Epidermis 1. General Characteristics- Consist of Stratified squamous keratinizing epithelium-Thickness of epidermis dependant on locality- 2 categories- thick skin, thin skin - Is composed of layers- Cells are continually growing more superficial C. Epidermis 2. Cell components a.Keratinocyte - most abundant cell type- keratinizes C. Epidermis 2. Cell components b. Melanocyte C. Epidermis 2. Cell components b. Melanocyte- involved with UV protection C. Epidermis 2. Cell components c. Langerhans cells- involved with Immunity d. Merkel’s cells- Involved with light touch sensation C. Epidermis 3. Layers of epidermis - Created by cytomorphosis C. Epidermis 4. Layers of epidermis a. Stratum germinativum (basalis)- Germinative layer- Most inferior layer- Single layer located next to the basal lamina - Epidermal ridges- Made up of mitotic Basal cells- Has melanocytes interspersed C. Epidermis 4. Layers of epidermis b. Stratum spinosum- Spiny Layer –Due to tonofilaments- 8-10 cells just above germinativum- Contain Langerhans cells C. Epidermis 4. Layers of epidermis 4....
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This note was uploaded on 04/02/2012 for the course BIO 180 taught by Professor Sarahbales during the Spring '11 term at Moraine Valley Community College.

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BIO 180-5 s04 bb - VII. Integumentary System VII....

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