BIO 115-3 i09 - F Accessory Structures 4 Nerves-6 major...

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VII. Integumentary System
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VII. Integumentary System A. Introduction 1. Components (2)
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VII. Integumentary System A. Introduction 1. Components (2) a. Cutaneous Membrane b. Associated structures ie.: Hair, nails, glands
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VII. Integumentary System A. Introduction 2. General Characteristics - Largest organ of body (16% of body weight) - Covers most of body
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VII. Integumentary System B. General Function
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VII. Integumentary System B. General Function - Protection - Production - Regulation - Detection - Reservation - Indication - Absorption - Excretion
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C. Burns 1 st degree - Only affects epidermis
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Unformatted text preview: F. Accessory Structures 4. Nerves-6 major types b. Free nerve ending-located in epidermis-Pain, temperature F. Aging 3 issues: • Glucose- Adheres to cells and proteins causing loss of elasticity and stiffness. • Collagen- Changes it’s quality loosin extensibility on blood vessels (atherosclerosis). • Elastin- Gets thicker and attracts calcium causing stiffness and diminished function of blood vessels. G. Wound healing • Epidermal • Deep wound- Inflammatory phase- blood clot. Immune cells helps and also fibroblasts.- Migratory phase- clot becomes a scab and cells start to proliferate underneath including blood vessels. -Proliferative- extensive growth of epithelial cells , deposition of collagen and blood vessels keeps growing.-Maturation- scab sloughs off and collagen fibers become organized. • Fibrosis- process of scar tissue. Scars left won’t have the same function and ability of normal skin....
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BIO 115-3 i09 - F Accessory Structures 4 Nerves-6 major...

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