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Liver: Anatomy & Function Video Lecture | Biology for Grade 11
FAQs on Liver: Anatomy & Function Video Lecture - Biology for Grade 11
| 1. What is the anatomy of the liver? |  |
Ans. The liver is a large, reddish-brown organ located in the upper right side of the abdomen. It is divided into two main lobes and further divided into smaller lobes called lobules. The liver receives blood from two sources, the hepatic artery and the portal vein, and is made up of specialized cells called hepatocytes.
| 2. What are the functions of the liver? | |
Ans. The liver performs various vital functions in the body. Some of its key functions include detoxification of harmful substances, production of bile to aid in digestion, storage of vitamins and minerals, synthesis of proteins, metabolism of carbohydrates, fats, and proteins, and regulation of blood glucose levels.
| 3. How does the liver detoxify harmful substances? | |
Ans. The liver detoxifies harmful substances by converting them into less toxic or water-soluble forms that can be easily eliminated from the body. This process involves two main phases: phase I, where enzymes convert the toxic substances into intermediate products, and phase II, where the intermediate products are further modified to be excreted.
| 4. What is the role of bile in digestion? | |
Ans. Bile, produced by the liver, plays a crucial role in digestion. It is stored in the gallbladder and released into the small intestine when needed. Bile helps in the breakdown and absorption of dietary fats by emulsifying them into smaller droplets, making it easier for enzymes to break them down.
| 5. How does the liver regulate blood glucose levels? | |
Ans. The liver plays a significant role in maintaining blood glucose levels within a narrow range. When blood glucose levels are high, the liver stores excess glucose as glycogen. Conversely, when blood glucose levels drop, the liver breaks down glycogen and releases glucose into the bloodstream to raise the levels back to normal. This process is regulated by various hormones, such as insulin and glucagon.
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