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Integumentary System

Integumentary System. Integumentary System. Organisms outer covering Varies in form but same basic function Made up of skin and its derivatives (scales, hair, nails, etc.) Largest organ. Function of the Integumentary System. C L A P S. Thermoregulation.

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Integumentary System

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  1. Integumentary System

  2. Integumentary System • Organisms outer covering • Varies in form but same basic function • Made up of skin and its derivatives (scales, hair, nails, etc.) • Largest organ

  3. Function of the Integumentary System • C • L • A • P • S

  4. Thermoregulation • Maintain homeostasis – stable internal environment – through regulating temperature • Endothermic • Ectothermic • Warm blooded vs. cold blooded

  5. Three Main Parts of Skin • Epidermis – outermost layer of skin • Dermis – under the epidermis • Hypodermis/ Subcutaneous layer – lowest layer of skin, mostly loose connective tissue and adipose cells (fat)

  6. Melanin • Pigment in skin – protection from UV rays • Albinism: lack of pigment in skin/eyes

  7. Accessory Structures • Nails • Hair • Glands: • Sebaceous – sebum • Sweat • Eccrine – “normal” sweat, most numerous, exit skin at a pore • Apocrine – activated by stress, associated with hair follicles • Specialized Sweat Glands: secrete ear wax (ceruminous fluid), mammary glands

  8. Differences in Vertebrate Skin • Scales • Fish (Placoid, Dermal, Cosmoid, Ganoid, Cycloid/Ctenoid) • Amphibians • Reptiles • Birds and mammals • Horns and antlers • Feathers

  9. Skeletal System • Goal: provide protection, support of body and organs • Provide attachment for muscles to allow for movement • Origin • Insertion

  10. Muscular System • Goal: allow for movement, heat • 3 types: skeletal, muscular, cardiac

  11. Digestive System • Goal: use enzymes to break down food to make energy • Starts at the mouth and ends with the anus

  12. Respiratory System • Goal: bring oxygen into the body so cellular respiration can occur • Rid body of excess carbon dioxide (waste product of cellular respiration) • Includes lungs, gills

  13. Circulatory System • Goal: transport blood throughout body • Blood carries nutrients, oxygen, waste • Includes heart, blood vessels

  14. Nervous System • Goal: regulate and coordinate all body systems, detect external stimuli, respond to stimuli • Includes brain, spinal cord and associated nerves

  15. Urogenital System • Goal: rid body of waste, reproduction • Includes kidneys, ureter, bladder, urethra

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