CBH 21 Adipose tissue

• Adipose tissue

  Connective tissue specialized in storing energy in form of lipids, composed of adipocytes, other cells and Extracellular matrix
• Types of adipose tissue

  White adipose tissue. Brown adipose tissue
• White adipose tissue


  Cells specialized for energy storage in lipid droplets to allow intervals between meals

  
• Characteristics of WAT

  oval or polyhedral diameter: 25 to 200 micrometers1 large lipid droplet not surrounded by a membrane but by perilipin and vimentin filaments , cytoplasm reduced to a thin cytoplasmic layer with a flattened nucleus where organelles are located
• Organelles of WAT

  mitochondria , small Golgi , few RER cisternae , Free ribosomes
• Distribution of white adipose tissue in body

  Subcutaneous:In children: thin subcutaneous continuous layer In adults: thickens in certain areas according to sex and age , Intra-abdominal , other sites
• Brown adipose tissue


  Diameter 15-60 micrometer oval central nucleus , many small lipid droplets , many mitochondria , many blood capillaries

  
• Functions of BAT

  Fatty acids metabolize in mitochondria for thermogenesis. In mitochondria, UC-1 allows for the production of heat
• Distribution of BAT

  Newborns: back, neck, and shouldersAdults: neck and upper chest regions