What happens to that cheeseburger and fries (or, we hope, that whole-wheat bread and green salad) you had for lunch? During the digestive process, food is converted into energy that's used by your body. Take this quiz to see how much you know about how digestion works.
1. How does food move through your digestive tract?
The Small Intestine Has a Surprisingly Large Surface Area
The small intestine of the average adult is around 22 feet long. The small intestine has a much larger surface area than you would expect because of its many folds and finger-like projections, called villi.
Because of coffee's acidity, it can adversely affect the lining of your stomach and intestines. If you drink a lot of coffee over an extended period, it may worsen some existing conditions that you may already have. It can exacerbate the symptoms often associated with gastritis and reflux.
The pancreas makes enzymes that help digest proteins, fats, and carbs. It also makes a substance that neutralizes stomach acid. These enzymes and bile travel through special pathways (called ducts) into the small intestine, where they help to break down food.
Your gut is a hotbed of nervous activity. The so-called enteric nervous system is a vast network of neurons in your gut. Some experts call it your “second brain.” In fact, you could consider it your first brain because, evolutionarily speaking, it came before your “head brain.”
The small intestine, which is 670 to 760 cm (22 to 25 feet) in length and 3 to 4 cm (about 2 inches) in diameter, is the longest part of the digestive tract.
Bile is a fluid that is made and released by the liver and stored in the gallbladder. Bile helps with digestion. It breaks down fats into fatty acids, which can be taken into the body by the digestive tract.
The accessory organs include the teeth, tongue, and glandular organs such as salivary glands, liver, gallbladder, and pancreas. The main functions of the GI system include ingestion and digestion of food, nutrient absorption, secretion of water and enzymes, and excretion of waste products.
Defecation is the term for the act of expelling feces from the digestive tract via the anus. This complex function requires coordination between the gastrointestinal, nervous, and musculoskeletal systems.
Digestion is the process of breaking down complex food materials into simpler substances by the action of enzymes. Need for a digestive system: Large complex molecules like carbohydrates, proteins and lipids need to be broken down to simpler molecules.
Digestion begins in the mouth. The food is ground up by the teeth and moistened with saliva to make it easy to swallow. Saliva also has a special chemical, called an enzyme, which starts breaking down carbohydrates into sugars.
The Digestive System is responsible for the breakdown of food in smaller components until they absorbed in body and generates energy. The tongue, salivary glands, pancreas, liver and gallbladder, intestinals etc are the imporatant parts of the digesion system.
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