https://www.khanacademy.org/science/health-and-medicine/gastro-intestinal-system/gastrointestinal-intro/v/liver 2023-08-17T23:33:36.770424498Z Liver The liver, a unique organ with regenerative abilities, plays a crucial role in metabolism, nutrient storage, and detoxification. It breaks down nutrients (catabolism) and builds larger macromolecules (anabolism). It stores carbohydrates and fats as glycogen, lipoproteins, and triglycerides. The liver also detoxifies toxins using cytochrome P450 enzymes, impacting drug efficacy. Lastly, it produces bile essential for fat absorption. Raja Narayan video https://cdn.kastatic.org/googleusercontent/FsTpHwN2TaujU3D6wowSzktL1XJqfnZxDUWJo6I6NMTCI4l-KZoUFwLAuIQXP22siRGX07xY9bfIDYyJtid6_y8 Liver The liver, a unique organ with regenerative abilities, plays a crucial role in metabolism, nutrient storage, and detoxification. It breaks down nutrients (catabolism) and builds larger macromolecules (anabolism). It stores carbohydrates and fats as glycogen, lipoproteins, and triglycerides. The liver also detoxifies toxins using cytochrome P450 enzymes, impacting drug efficacy. Lastly, it produces bile essential for fat absorption. https://cdn.kastatic.org/ka-youtube-converted/rDjWrNRKfvg.mp4/rDjWrNRKfvg.mp4 388 Accessory organs and regulation https://www.khanacademy.org/science/health-and-medicine/gastro-intestinal-system/gastrointestinal-intro/v/biliary-tree 2020-09-09T11:23:48Z Biliary tree The biliary tree (also known as the biliary tract or biliary system) is comprised of the gallbladder, liver and bile ducts. These structures produce, store, and release bile to the small intestines, where it aids in the digestion of lipids.​ Raja Narayan video https://cdn.kastatic.org/googleusercontent/0d3WvwTRMOWMyZBfSfJuLdw8j0OgZxv2bb_2ACj5T5Z_ecxHHGCxIWDNv_8edtBBQW2sF8BixCygVp-bY_mUW79N Biliary tree The biliary tree (also known as the biliary tract or biliary system) is comprised of the gallbladder, liver and bile ducts. These structures produce, store, and release bile to the small intestines, where it aids in the digestion of lipids.​ https://cdn.kastatic.org/ka-youtube-converted/jmfcACEGW-0.mp4/jmfcACEGW-0.mp4 360 Accessory organs and regulation https://www.khanacademy.org/science/health-and-medicine/gastro-intestinal-system/gastrointestinal-intro/v/endocrine-pancreas 2023-08-17T23:33:36.770424498Z Endocrine pancreas The endocrine pancreas, a key player in diabetes, releases hormones that travel throughout the body. It houses alpha, beta, and delta islet cells, each with unique roles. Alpha cells release glucagon, which breaks down glycogen into glucose. Beta cells release insulin, which builds glucose into glycogen and is crucial in diabetes management. Delta cells release somatostatin, inhibiting other hormones. Understanding these functions is essential for tackling diabetes. Raja Narayan video https://cdn.kastatic.org/googleusercontent/mSirEEtMGKetZXMEmeyM_zElPyynGEcM0hfjxAVqQ05SCcLLnFtha2Be82t7156NL0Y_NeLQeSwO-0P_Wd2_YrMn Endocrine pancreas The endocrine pancreas, a key player in diabetes, releases hormones that travel throughout the body. It houses alpha, beta, and delta islet cells, each with unique roles. Alpha cells release glucagon, which breaks down glycogen into glucose. Beta cells release insulin, which builds glucose into glycogen and is crucial in diabetes management. Delta cells release somatostatin, inhibiting other hormones. Understanding these functions is essential for tackling diabetes. https://cdn.kastatic.org/ka-youtube-converted/xNf--q0YMq8.mp4/xNf--q0YMq8.mp4 410 Accessory organs and regulation https://www.khanacademy.org/science/grade-11-biology-snc-aligned/x58c107ba92d3f0b2:domain-j-human-physiology/x58c107ba92d3f0b2:accessory-organs-and-regulation/e/endocrine-pancreas 2025-11-16T04:40:45.686796996Z Endocrine Pancreas This exercise covers the pancreas’s anatomy and function, highlighting exocrine acini (digestive enzymes) and endocrine Islets of Langerhans (insulin and glucagon). Scenarios show how the pancreas regulates blood glucose, the effects of cell damage, and differences between endocrine and exocrine roles in digestion and homeostasis. Khan Academy exercise https://www.khanacademy.org/science/health-and-medicine/gastro-intestinal-system/gastrointestinal-intro/v/exocrine-pancreas 2023-08-17T23:33:36.770424498Z Exocrine pancreas The pancreas, often referred to as the 'lion of the abdomen', plays a crucial role in digestion. This organ, located in the retroperitoneum, releases powerful enzymes like amylase and lipase that break down starches and lipids. It also produces bicarbonate to neutralize stomach acid and proteolytic enzymes to break down proteins. Raja Narayan video https://cdn.kastatic.org/googleusercontent/JocP0C76xYvd6mFeAdDgGwZCUT83i9etb69z3iNBEWSt5TWzjZLX8PzShan8oBnUpBCkVa-hdnQHUBreLyI09sk Exocrine pancreas The pancreas, often referred to as the 'lion of the abdomen', plays a crucial role in digestion. This organ, located in the retroperitoneum, releases powerful enzymes like amylase and lipase that break down starches and lipids. It also produces bicarbonate to neutralize stomach acid and proteolytic enzymes to break down proteins. https://cdn.kastatic.org/ka-youtube-converted/BtqlMr1rUT8.mp4/BtqlMr1rUT8.mp4 589 Accessory organs and regulation https://www.khanacademy.org/science/grade-11-biology-snc-aligned/x58c107ba92d3f0b2:domain-j-human-physiology/x58c107ba92d3f0b2:accessory-organs-and-regulation/v/endocrine-system-major-hormones-functions 2026-01-02T12:19:13.778632637Z Endocrine system (major hormones & functions) Created by Khan Academy Pakistan video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Endocrine system (major hormones & functions) Created by Khan Academy Pakistan https://cdn.kastatic.org/ka-youtube-converted/9Nw8go3bGCs.mp4/9Nw8go3bGCs.mp4 666 Accessory organs and regulation