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Adipose Tissue

Adipose Tissue . Presentation # 2 Kelli Carlson and Kelly Zook. Types of Adipose Tissue. Two types of adipose tissue White Stores energy as large fat droplets Most common Helps with heat insulation, mechanical cushion and as a source of energy Brown

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Adipose Tissue

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  1. Adipose Tissue Presentation # 2 Kelli Carlson and Kelly Zook

  2. Types of Adipose Tissue • Two types of adipose tissue • White • Stores energy as large fat droplets • Most common • Helps with heat insulation, mechanical cushion and as a source of energy • Brown • Stores energy as much smaller droplets and burns them quicker • Packed with mitochondria • Infants are born with rich stores

  3. How does it get there? • Adipocytes makes up adipose tissue • Adipocytes form in the body during embryonic development/pregnancy

  4. Adipocyte Formation / growth • Originate from fibroblast-like precursor cells that differentiate into adipocytes under specific conditions • When filled with lipid and get to a critical size, precursor cells stimulated to differentiate  hyperplastic growth • No marker used to determine whether they will become adipocytes

  5. Formation / growth • Hyperplastic growth: increase in number of adipocytes from precursor cells – cannot be reversed • Third trimester of pregnancy (embryo) – 4 weeks of age and prior to/during puberty  CRUCIAL TIMES FOR NOURISHMENT AND PREVENTING FUTURE OBESITY! • Can also occur in adults - When adipocytes fill with lipid and get to a critical size, precursor cells are stimulated to differentiate, and an increase in adipocyte number results • Once new adipocytes are formed they remain throughout life- only a reduction in size is possible • Hypertrophic growth: increase in size of adipocytes

  6. consumption • Lipogenesis: deposition of fat – occurs at cellular level • Energy ingested as fat beyond daily energy demands is stored in adipose tissue • Excess carbs and proteins can also be converted to fat and stored in adipose tissue

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