Dictionary > Bile


A greenish-yellow bodily fluid secreted by the liver and stored in the gallbladder, and discharge into the duodenum where it aids in the digestion of fats
The bile is a bodily fluid that is greenish-yellow in colour. In humans, it is produced and secreted by the liver. The bile then passes through the bile duct towards the gallbladder where it will be stored. The gallbladder bile is comprised mainly of water (97%). Other components include bile salts, bilirubin and other bile pigments, fats (e.g. cholesterol), and inorganic salts. Bile salts aid in the digestion of fats. Adult humans produce about 400 to 800 ml of bile per day.
Digestion of a fat-containing foodstuff incites the discharge of bile from the gallbladder into the duodenum to aid in the digestion of lipids. It acts as a surfactant, emulsifying the lipids. The bile salts, in particular, aggregate around the droplets of lipids and form micelles. This prevents fat droplets from aggregating into larger fat particles.

  • gall

See also:

  • liver
  • gallbladder
  • digestion
  • lipid
  • bilirubin
  • Related term(s):

    • Bile acid 3alpha-sulfate sulfohydrolase
    • Bile acid 7alpha-dehydratase
    • Bile duct
    • Bile pigments
    • Bile salts
    • Common bile duct
    • White bile

    You will also like...

    Thermographic image of face and neck
    Regulation of Organic Metabolism, Growth and Energy Balance

    The human body is capable of regulating growth and energy balance through various feedback mechanisms. Get to know the e..

    Energy pyramid
    Freshwater Community Energy Relationships – Producers & Consumers

    This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..

    Population Growth and Survivorship
    Population Growth and Survivorship

    This lesson looks at population attributes, regulation, and growth. It also covers population genetics, particularly gen..

    The Human Physiology
    The Human Physiology

    Physiology is the study of how living organisms function. Thus, human physiology deals specifically with the physiologic..

    Growth and Plant Hormones
    Growth and Plant Hormones

    Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..

    Biosecurity and Biocontrol
    Biosecurity and Biocontrol

    This lesson explores the impact of biosecurity threats, and why they need to be identified and managed. Examples to incl..