integumentary

Integumentary - Integumentary System Functions Defense Regulation Sensory Perception Highly Variable Characteristics Components Epidermis Derived

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9/20/2011 1 Integumentary System Functions: Defense Regulation Sensory Perception Highly Variable Characteristics Components Epidermis Derived from ectoderm Layers always has Stratum Germinativum outer layers highly variable if additional layers are present, the outermost is the Stratum Corneum Components Dermis Derived from mesoderm Connects epidermis to underlying musculature Generally thicker than epidermis Contains connective tissue and smooth muscle fibers Contains all nervous and circulatory elements of the integument Houses many of the structures made in the epidermis
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9/20/2011 2 Integumentary color 1. Chromatophores cells that actually produce color epidermal only one type = melanophores dermal melanophores & lipophores » lipophore = xanthophores and erythrophores 2. Iridocytes (guanophores) contain crystal of guanine 3. Photophores light producing Integumentary color Color change Morphological color change Physiological color change Integumentary Glands all develop from the stratum germinativum in the epidermis all integumentary glands are exocrine (vs. endocrine) Glandular cell types Merocrine Cellular secretions Apocrine Partial cell disintegration Holocrine Entire cell destroyed
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This note was uploaded on 01/17/2012 for the course BIOL 306 taught by Professor Phillipd.sudman during the Spring '12 term at Tarleton.

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Integumentary - Integumentary System Functions Defense Regulation Sensory Perception Highly Variable Characteristics Components Epidermis Derived

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