https://www.khanacademy.org/science/bridge-course-class-10th-science/x37589313f9a4c197:untitled-78/x37589313f9a4c197:life-processes/v/human-digestive-system-in 2025-01-14T13:46:46.197485586Z Human Digestive System The fascinating journey of food through the human digestive system! From the mouth, where digestion begins with saliva, to the stomach, where gastric juices work their magic, and finally to the small and large intestines, where nutrients are absorbed and waste is processed—every step is an incredible process. Learn how organs like the liver, pancreas, and gallbladder play vital roles in breaking down food and supporting digestion. This video breaks down the complex digestive system into simple, easy-to-understand steps. Shankar Nair video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Human Digestive System The fascinating journey of food through the human digestive system! From the mouth, where digestion begins with saliva, to the stomach, where gastric juices work their magic, and finally to the small and large intestines, where nutrients are absorbed and waste is processed—every step is an incredible process. Learn how organs like the liver, pancreas, and gallbladder play vital roles in breaking down food and supporting digestion. This video breaks down the complex digestive system into simple, easy-to-understand steps. https://cdn.kastatic.org/ka-youtube-converted/2uL4b1yMhm8.mp4/2uL4b1yMhm8.mp4 492 The digestive system https://www.khanacademy.org/science/health-and-medicine/gastro-intestinal-system/gastrointestinal-intro/v/meet-the-gastrointestinal-tract 2024-04-04T15:34:20.714536152Z Meet the gastrointestinal tract! The gastrointestinal tract is the path food takes from mouth to anus. It consists of the mouth (chewing, enzyme-assisted breakdown), esophagus (food propulsion), stomach (churning, storage), small intestine (nutrient absorption, hydrolysis), large intestine (absorbing water, ions, vitamins), rectum (storing waste), and anus (expelling waste). Each part plays a crucial role in digestion. Raja Narayan video https://cdn.kastatic.org/googleusercontent/4n3Ak0EWQ9EMBtxMaheZL3dbdraIhIJANOnyoCij5pvFYcNlGXXjV-ZAS4FoUe65kSW4Wbq-LNDBNTfGmO1CaJL6 Meet the gastrointestinal tract! The gastrointestinal tract is the path food takes from mouth to anus. It consists of the mouth (chewing, enzyme-assisted breakdown), esophagus (food propulsion), stomach (churning, storage), small intestine (nutrient absorption, hydrolysis), large intestine (absorbing water, ions, vitamins), rectum (storing waste), and anus (expelling waste). Each part plays a crucial role in digestion. https://cdn.kastatic.org/ka-youtube-converted/Oh_Pt_UrtEE.mp4/Oh_Pt_UrtEE.mp4 321 The digestive system https://www.khanacademy.org/science/health-and-medicine/gastro-intestinal-system/gastrointestinal-intro/v/mouth 2023-08-17T23:33:36.770424498Z Mouth Discover the role of the mouth in digestion, from mastication to the creation of a food bolus. Learn about the tongue's intrinsic and extrinsic muscles, the enzymes involved in hydrolysis, and the glands that contribute to this process. Understand the importance of maintaining a neutral pH in the mouth for optimal oral health. Raja Narayan video https://cdn.kastatic.org/googleusercontent/YwdIOYLswhLLgkW3mJxsIdyw3uunO8Vaju26Jgmgz1tzEenCc_fCM1QjunCRTrPsqkWm8FkEWqX4FankjK5Mgy15 Mouth Discover the role of the mouth in digestion, from mastication to the creation of a food bolus. Learn about the tongue's intrinsic and extrinsic muscles, the enzymes involved in hydrolysis, and the glands that contribute to this process. Understand the importance of maintaining a neutral pH in the mouth for optimal oral health. https://cdn.kastatic.org/ka-youtube-converted/KyEk35-Uwh0.mp4/KyEk35-Uwh0.mp4 450 The digestive system https://www.khanacademy.org/science/health-and-medicine/gastro-intestinal-system/gastrointestinal-intro/v/esophagus 2025-09-03T08:00:45.258220483Z Esophagus Explore the esophagus, the tube connecting our mouth to our stomach. Understand its structure, divided into thirds, with skeletal muscle at the top, a mix in the middle, and smooth muscle at the bottom. Learn about the role of the esophagus in peristalsis, the wave-like propulsion of food, and the unique function of the upper and lower esophageal sphincters. Raja Narayan video https://cdn.kastatic.org/googleusercontent/UMQHu_KMC1CUXGlBr0TLEGY12PWgjZdoWRy8zDdbcW9OHyuO_M2F2IIBmKi_TGT5yPbJWhMSRH2n2Yr8frAWjJf64A Esophagus Explore the esophagus, the tube connecting our mouth to our stomach. Understand its structure, divided into thirds, with skeletal muscle at the top, a mix in the middle, and smooth muscle at the bottom. Learn about the role of the esophagus in peristalsis, the wave-like propulsion of food, and the unique function of the upper and lower esophageal sphincters. https://cdn.kastatic.org/ka-youtube-converted/wU9_daCwr_w.mp4/wU9_daCwr_w.mp4 334 The digestive system https://www.khanacademy.org/science/health-and-medicine/gastro-intestinal-system/gastrointestinal-intro/v/stomach 2023-08-17T23:33:36.770424498Z Stomach he human stomach is a marvel, capable of storing up to four liters of food and playing a crucial role in digestion. This process involves receiving a bolus of food, churning it, and breaking it down through hydrolysis, resulting in a product called chyme. The stomach's anatomy, including parietal cells, chief cells, and mucus cells, facilitates this complex process. Raja Narayan video https://cdn.kastatic.org/googleusercontent/UbUFydKMjHgcYLNLqFVxJa8_VKdVtiwSGQtORDlqJtrSKV8u24x2mWQc3HRr282Iw1Fieb_uxTo80a04lSCu8iU43Q Stomach he human stomach is a marvel, capable of storing up to four liters of food and playing a crucial role in digestion. This process involves receiving a bolus of food, churning it, and breaking it down through hydrolysis, resulting in a product called chyme. The stomach's anatomy, including parietal cells, chief cells, and mucus cells, facilitates this complex process. https://cdn.kastatic.org/ka-youtube-converted/OzLoUCCASwM.mp4/OzLoUCCASwM.mp4 358 The digestive system https://www.khanacademy.org/science/strengthened-shs-biology-2/x62f5297cda63eb8d:plant-organ-systems/x62f5297cda63eb8d:the-digestive-system/v/stomach-basic-to-advanced 2026-02-16T08:20:40.549554389Z Stomach (Basic to Advanced) Did you know your stomach can mix food of its own??? In this video, we go beyond the surface to explore the complex architecture of this vital digestive organ. We look at the regions of the stomach & the sphincters. We also look at the feature that helps the stomach to act like a muscular bag & mechanically breakdown food. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Stomach (Basic to Advanced) Did you know your stomach can mix food of its own??? In this video, we go beyond the surface to explore the complex architecture of this vital digestive organ. We look at the regions of the stomach & the sphincters. We also look at the feature that helps the stomach to act like a muscular bag & mechanically breakdown food. https://cdn.kastatic.org/ka-youtube-converted/9JF1zVyYqn4.mp4/9JF1zVyYqn4.mp4 126 The digestive system https://www.khanacademy.org/science/strengthened-shs-biology-2/x62f5297cda63eb8d:plant-organ-systems/x62f5297cda63eb8d:the-digestive-system/e/digestion-in-oesophagus-and-stomach 2025-11-24T17:20:50.952945651Z Digestion in Oesophagus and Stomach This exercise covers digestion in the oesophagus and stomach, including sphincter control, stomach regions, chyme formation, storage functions, gastric juice composition, protective barriers, and enzyme activation. Students will interpret diagrams and apply structure–function reasoning to real digestive processes. Khan Academy exercise https://www.khanacademy.org/science/odia-class-10-life-sciencesinnew/x50a34472af8d481d:nutrition/x50a34472af8d481d:nutrition-in-human-beings/v/small-and-large-intestines 2024-09-10T08:35:31.206617227Z Small and Large Intestines How is the human digestive system organised to efficiently digest food into simpler molecules? Watch the series of videos on the different parts of the digestive system to understand the process of digestion. Nivedhitha Suresh video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Small and Large Intestines How is the human digestive system organised to efficiently digest food into simpler molecules? Watch the series of videos on the different parts of the digestive system to understand the process of digestion. https://cdn.kastatic.org/ka-youtube-converted/qglRyX1OAOA.mp4/qglRyX1OAOA.mp4 537 The digestive system https://www.khanacademy.org/science/health-and-medicine/gastro-intestinal-system/gastrointestinal-intro/v/small-intestine-part-1 2023-08-17T23:33:36.770424498Z Small intestine 1: Structure Explore the small intestine's role in digestion and nutrient absorption. Learn about the three parts: the duodenum, where most digestion occurs, the jejunum, where nutrients are absorbed, and the ileum, where important vitamins are absorbed. Discover the role of villi and microvilli in increasing surface area for digestion. Raja Narayan video https://cdn.kastatic.org/googleusercontent/NycwGTv_yI9wEe7k-SE90NIyTwaxLK6jcmIl6Nmd-hpjAs98CayYtS8GONOhgKGG_UtQ0CXVOawjkkSvT7lKBvzndw Small intestine 1: Structure Explore the small intestine's role in digestion and nutrient absorption. Learn about the three parts: the duodenum, where most digestion occurs, the jejunum, where nutrients are absorbed, and the ileum, where important vitamins are absorbed. Discover the role of villi and microvilli in increasing surface area for digestion. https://cdn.kastatic.org/ka-youtube-converted/UgnF1w-H8vw.mp4/UgnF1w-H8vw.mp4 390 The digestive system https://www.khanacademy.org/science/health-and-medicine/gastro-intestinal-system/gastrointestinal-intro/v/small-intestine-part-2-digestion 2023-08-17T23:33:36.770424498Z Small intestine 2: Digestion This video explores the digestion process, focusing on the breakdown of four major macromolecules: proteins, carbohydrates, nucleotides, and fats. It highlights the role of various enzymes in this process, and how the pancreas and brush border contribute to digestion. The video also touches on temporary lactose intolerance due to stomach flu. Raja Narayan video https://cdn.kastatic.org/googleusercontent/7SeJGJeVEe-oj4cYkzJQGYYvnmYZ5Rp-B6DgklmRZxNH0YQo0qO3lGk_yAcy4dW5HylO5g_a8p_6sAAJiF-3XcwW Small intestine 2: Digestion This video explores the digestion process, focusing on the breakdown of four major macromolecules: proteins, carbohydrates, nucleotides, and fats. It highlights the role of various enzymes in this process, and how the pancreas and brush border contribute to digestion. The video also touches on temporary lactose intolerance due to stomach flu. https://cdn.kastatic.org/ka-youtube-converted/nLCNoT79_-o.mp4/nLCNoT79_-o.mp4 405 The digestive system https://www.khanacademy.org/science/health-and-medicine/gastro-intestinal-system/gastrointestinal-intro/v/small-intestine-part-3-absorption 2023-08-17T23:33:36.770424498Z Small intestine 3: Absorption This video explains the absorption process of monomers in our body. It details how amino acids, sugars, nucleosides, and fats are transported into cells using primary and secondary active transport. The video also highlights the role of ATP and ion gradients in this process. Raja Narayan video https://cdn.kastatic.org/googleusercontent/tyNkccFdzEWS0bhaKb2-b4NhlpA-v2dZFCvJ4DhUcPP68gMQQ3mTizNgYlR8fg8WvKYOW-1jN8Iw_Eo_nrO17Z93RA Small intestine 3: Absorption This video explains the absorption process of monomers in our body. It details how amino acids, sugars, nucleosides, and fats are transported into cells using primary and secondary active transport. The video also highlights the role of ATP and ion gradients in this process. https://cdn.kastatic.org/ka-youtube-converted/7zq3s3F5Do8.mp4/7zq3s3F5Do8.mp4 295 The digestive system https://www.khanacademy.org/science/strengthened-shs-biology-2/x62f5297cda63eb8d:plant-organ-systems/x62f5297cda63eb8d:the-digestive-system/e/small-intestine-and-large-intestine 2025-11-24T17:20:50.952945651Z Small Intestine and Large Intestine This exercise covers the structure and function of the small and large intestines, including nutrient absorption, enzyme entry, fermentation, and feces formation. Students will interpret diagrams and link intestinal structures to their digestive roles. Khan Academy exercise https://www.khanacademy.org/science/in-in-class-10-biology/in-in-life-processes/in-in-nutrition-in-human-beings/e/digestion-in-intestines 2026-03-31T17:15:33.948437145Z Digestion in Intestines Let's practice on the digestive processes that take place in our intestines. Saiyem exercise 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 The digestive system 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 The digestive system https://www.khanacademy.org/science/health-and-medicine/gastro-intestinal-system/gastrointestinal-intro/v/colon-rectum-anus 2023-08-17T23:33:36.770424498Z Colon, rectum, and anus Explore the final part of the gastrointestinal tract, the large intestine, rectum, and anus. Understand their roles in absorbing water, inorganic ions, and aiding in digestion with the help of microorganisms. Learn about the implications of water absorption on conditions like diarrhea and constipation, and the importance of the rectum and anus in waste storage and expulsion. Raja Narayan video https://cdn.kastatic.org/googleusercontent/IYauP3hJUV5MIH24qZ1Lg0gwG1SgLBNIRZz_BlEIOD2GcLovGiH6OYlxS0yDeneKBt0mv3nHGyoCEy9d97pChxg0dA Colon, rectum, and anus Explore the final part of the gastrointestinal tract, the large intestine, rectum, and anus. Understand their roles in absorbing water, inorganic ions, and aiding in digestion with the help of microorganisms. Learn about the implications of water absorption on conditions like diarrhea and constipation, and the importance of the rectum and anus in waste storage and expulsion. https://cdn.kastatic.org/ka-youtube-converted/Lzr9GGjh6YQ.mp4/Lzr9GGjh6YQ.mp4 585 The digestive system https://www.khanacademy.org/science/bridge-course-class-10th-science/x37589313f9a4c197:untitled-78/x37589313f9a4c197:life-processes/e/the-human-digestive-system 2026-04-08T00:36:09.500768563Z The Human Digestive System Lets answer some questions! Shankar R exercise https://www.khanacademy.org/science/mh-class-7-science-revision-course/x16e69e7a3344a1ee:week-3/x16e69e7a3344a1ee:untitled-318/e/parts-of-the-digestive-system 2026-04-07T23:17:37.123726494Z Parts of the digestive system Let's practice vibhor exercise https://www.khanacademy.org/science/grade-6-science-snc-aligned/x19bc096754f0b9af:human-digestive-system/x19bc096754f0b9af:digestive-system/e/digestion-in-humans 2026-04-09T13:10:38.304888012Z Digestion in humans Let's solve a few questions on the digestive system in a human body. Revathi exercise https://www.khanacademy.org/science/bridge-course-class-11th-biology/xfa1bbeaa3bc88e64:plant-physiology/xfa1bbeaa3bc88e64:human-physiology/v/human-digestive-system 2024-12-29T07:21:40.948705593Z Secretions and functions of glands Let's explore the important enzymes and steps of the human digestive system Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Secretions and functions of glands Let's explore the important enzymes and steps of the human digestive system https://cdn.kastatic.org/ka-youtube-converted/wIN_OwWT2Kk.mp4/wIN_OwWT2Kk.mp4 412 The digestive system https://www.khanacademy.org/science/shs-biology-2/x2ea931c66bba6acd:unit-1-name/x2ea931c66bba6acd:animal-nutrition/e/digestion-in-herbivores 2025-02-13T13:42:33.753834602Z Digestion in herbivores, amoeba and hydra Let's solve some questions on digestion in herbivores, amoeba and hydra Vibhor Pandey exercise