Biology

• Urinary bladder
  Urinary bladder
  The urinary bladder is the organ that collects urine excreted by the kidneys before disposal by urination. A hollow muscular, and distensible organ, the bladder sits on the pelvic floor...
  
   in humans
  • Urinary bladder (Chinese medicine)
  • Bladder control; see Urinary incontinence
    Urinary incontinence
    Urinary incontinence is any involuntary leakage of urine. It is a common and distressing problem, which may have a profound impact on quality of life. Urinary incontinence almost always results from an underlying treatable medical condition but is under-reported to medical practitioners...
    
    
  • Artificial urinary bladder
    Artificial urinary bladder
    An artificial urinary bladder is an artificial organ to replace a urinary bladder.On April 4, 2006, it was announced that a team of biologists at the Wake Forest University School of Medicine, led by Professor Anthony Atala, had created the world's first lab-grown organ, a bladder, and transplanted...
    
    , in humans
• Pig bladder
  Pig bladder
  Pig bladder is the bladder of a domestic pig, similar to the human urinary bladder. Today, this hollow organ has various applications in medicine, and in traditional cuisines and customs...
  
  , urinary bladder of a domestic pig, with many human uses
• Gallbladder
  Gallbladder
  In vertebrates the gallbladder is a small organ that aids mainly in fat digestion and concentrates bile produced by the liver. In humans the loss of the gallbladder is usually easily tolerated....
  
  , which stores bile for digestion
• Swim bladder, in bony fishes, an internal organ that helps to control buoyancy

Technology

• Waterskin
  Waterskin
  A waterskin is a receptacle used to hold water. Normally made of a sheep or cow bladder, it retains water naturally and therefore was very useful in desert crossings up until the invention of the canteen. It is still used in some developing nations...
  
  , a traditional container for transporting water
• Hydration system
  Hydration system
  In recreation and other sustained outdoor activities, a hydration system is an apparatus intended to help its user in drinking enough liquid to support the physical effort involved in the activity. Such systems for consumers were first sold to cyclists, but by the 1990s also had found a...
  
  , sometimes known as a bladder
• Wine bladder, see Bag-In-Box
  Bag-In-Box
  In packaging, a bag-in-box or BiB is a type of container for the storage and transportation of liquids. It consists of a strong bladder , usually made of several layers of metallised film or other plastics, seated inside a corrugated fiberboard box. The bag is supplied to the 'filler' as an empty...
  
  
• Pneumatic bladder, an old technology with many industrial applications