Absorb: To take something in, can be a liquid or other substance. Alimentary Canal: It is a passage through which the food passes. Anus: It an opening at the end of digestive system, from which the waste matter exit. Appendix: It's a tube-shaped sac, which is joined to the lower end of the large intestine. Bile: It is a yellowish-green fluid which is secreted by the liver and gets stored in the gallbladder. Digestive System: This system helps to absorb food in the body, and get rid of waste (feces) from the body. Epiglottis: It's a small flap located at the back of the tongue, it opens at the opening of the esophagus to pass the food, and ensures that the food doesn't go down the windpipe. Esophagus: It is a long tube that connects mouth and the stomach, food passes from mouth to stomach via this tube. Gallbladder: It's a small organ which is below the liver. It is sac-shaped and stores bile. Gastrointestinal Tract: Also, referred as GI tract or digestive system is an important body system which absorbs food and gets rid of waste. Liver: Liver is the biggest organ in the body after skin. This organ helps in digestion and removes waste products and worn-out cells out of blood. Mouth: The top opening of the digestive tract, starts with lips and includes tongue, teeth and gums. Pancreas: It is a large gland located behind the stomach, it helps to secrete digestive enzymes into the duodenum. Rectum: The last section of the large intestine, which stores solid waste. Salivary Glands: They are located in the mouth and help to create saliva. Stomach: A sac-shaped organ which is attached to the esophagus, it helps to break down and digest the food. Small Intestine: It forms a part of the digestive tract and is between the stomach and the large intestine. Large Intestine: It is attached to the small intestine, and is wider than the small intestine. It helps to absorb water from the waste. Trachea: It is also known as windpipe, and is a tube-like part of the respiratory tract. Lactose Intolerance: Lactose is a type of sugar present in milk and dairy products. Some people can't tolerate it, and on consuming such foods suffer from symptoms like bloating and gas. Heartburn: Backward flow of fluids from stomach to the esophagus, causes a warm sensation in the upper abdomen. Enzymes: These are proteins which help to speed up a chemical reaction. Saliva: Watery secretion in the mouth due to salivary glands is called saliva. Stool: It is the solid matter which is discharged by the anus. Q1. Where does the digestion start? Stomach Mouth Liver   Q2. The stomach is shaped like which letter? J Z K   Q3. How long is the small intestine? 35 feet 22 feet 10 feet   Q4. Which is the largest organ in the human body after skin? Large Intestine Stomach Liver   Q5. The food passes from mouth to _____ and then to the stomach. Fill in the blank. Esophagus Pipe Small Intestine Pancreas   Now that you know so much about digestive system and understand that it is an important system in the body, make sure you follow healthy habits to maintain your digestive system. Keep eating a lot of fresh fruits and vegetables, as they are rich in dietary fiber. Dietary fiber helps to clean the intestines by removing fats and aids in digestion. Also, drink plenty of water throughout the day to keep yourself hydrated. Keep yourself active by playing outside and doing activities like running, jumping, or other sports. Following such habits will keep your digestive system functioning smoothly and keep you in great health.