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Bile | Biology for GCSE/IGCSE - Year 11 PDF Download

Bile: Extended

  • Liver cells synthesize bile, which is subsequently stored in the gallbladder.

Bile | Biology for GCSE/IGCSE - Year 11

Bile has two main roles:

  • Bile is alkaline, serving to counteract the acidic nature of hydrochloric acid from the stomach.
  • The enzymes within the small intestine function optimally in a more alkaline environment compared to those in the stomach.
  • Bile aids in emulsifying large fat droplets into smaller ones, thereby increasing the surface area for more efficient chemical breakdown by lipase into glycerol and fatty acids.

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What is the main role of bile in the digestive system?
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FAQs on Bile - Biology for GCSE/IGCSE - Year 11

1. What is the function of bile in the digestive system?
Ans. Bile plays a crucial role in the digestion and absorption of fats in the small intestine. It helps to emulsify fats, making it easier for enzymes to break them down into smaller molecules for absorption.
2. How is bile produced in the body?
Ans. Bile is produced in the liver and stored in the gallbladder. The liver continuously produces bile, which is then stored in the gallbladder until it is needed for digestion.
3. Can a lack of bile production lead to digestive issues?
Ans. Yes, a lack of bile production can lead to digestive issues, such as difficulty digesting fats, bloating, and malabsorption of essential nutrients. This condition is known as bile insufficiency.
4. What are some common symptoms of bile duct obstruction?
Ans. Common symptoms of bile duct obstruction include jaundice (yellowing of the skin and eyes), dark urine, pale stools, itching, and abdominal pain.
5. How can bile flow be improved naturally?
Ans. Bile flow can be improved naturally by maintaining a healthy diet rich in fruits, vegetables, and fiber, staying hydrated, exercising regularly, and avoiding excessive alcohol consumption. Some herbal remedies like milk thistle may also support healthy bile production.
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