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This 9 page Class Notes was uploaded by Corina Johnson on Tuesday February 23, 2016. The Class Notes belongs to 10584 at University of Houston taught by Dr. Lawrence Williams in Spring 2016. Since its upload, it has received 21 views. For similar materials see General Biology in Biology at University of Houston.
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Date Created: 02/23/16
TISSUES OF THE BODY • EPITHELIAL • CONNECTIVE • MUSCULAR • NERVOUS INTEGUMENTARY SYSTEM FUNCTION: 1. Generally protective; desiccation, abrasion, UV light, infectious agents. 2. Some excretion of metabolic wastes (Nitrogen wastes and carbon dioxide). 3. Homeostasis of temperature. 4. Some hormone production (e.g., vitamin D). INTEGUMENTARY SYSTEM TYPES: INVERTEBRATES: Protozoans- cell membrane Other types- shells, skin, or exoskeleton INTEGUMENTARY SYSTEM VERTEBRATES: double layered skin Dermis: deep layer with blood vessels and nerves. Epidermis: superficial layer of stratified squamos cells and epidermal derivatives. Glandular in birds and mammals. Produces scales, feathers, and hair. Vertebrate Skin VERTEBRATE EPIDERMAL GLANDS 1. SEBACEOUS 2. SUDIFEROUS: Two types are Eccrin and Apocrine. 3. CERUMINOUS • Epidermal glands: – Sebaceous: produces Oils for hairs and feathers and to keep skin soft. Also produces Sebum, the oily mixture on palms and feet. • Epidermal glands: – Sudiferous: Sweat glands. Two types are Eccrine which produce mostly NaCl and water and Apocrine which produce a milky-colored secretion. Apocrine glands are found in the public region (chemical communication???) and on the breast of mammals (lactation in females). • Epidermal glands: – Ceruminous: produce Cerumin a waxy substance associated with ears.
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