The primary function of the pyloric valve is to impede undigested or large food particles from entering the intestine. It is a cone-shaped valve that connects the end of the stomach to the start of the small intestine.Continue Reading
The pyloric valve is comprised of the pyloric antrum, which connects to the stomach, and the pyloric canal, which leads to the upper region of the small intestine. When the valve contracts, it holds food in the stomach, where digestive juices engage to break down the particles. Once the food is properly broken down, the valve opens and allows the food to enter the upper areas of the small intestine. The valve's mucous-membrane lining secretes essential gastric juices, which prevent intestinal contents from returning to the stomach during intestinal contractions.
The valve's muscular tissue allows it to open or close, which is vital for permitting or retaining food particles during the digestion process. The muscle is commonly relaxed and open to transfer small food particles into the upper region of the small intestine. When the small intestine takes in too much food it puts pressure on the pylorus, which causes the valve to contract and close. The closing of the valve prevents acid reflux by impeding the particles from re-entering the stomach.Learn more about Organs
The stomach stores swallowed and digested food, mixes it with digestive juices, and empties its contents into the small intestine. The stomach is part of the body's gastrointestinal tract, according to the National Institute of Diabetes and Digestive and Kidney Diseases.Full Answer >
A mixture of food, liquid and digestive juice called chyme enters the small intestine from the stomach and combines with secretions such as enzymes, bicarbonate and bile salts to further break down food, according to the International Foundation for Functional Gastrointestinal Disorders. These enzymes come from the liver and pancreas. Food digests in three distinct parts of the small intestine.Full Answer >
Villi are microscopic, slender, hair-like projections that line the small intestine to facilitate food absorption, explains Encyclopædia Britannica. Villi number between 6,000 and 25,000 per square inch of the small intestine, with greater densities near the beginning of the organ closer to the stomach. Villi are also found in the placenta surrounding a fetus in the womb.Full Answer >
The large intestine absorbs the water left in any undigested food matter and passes unused waste material from the body. It also absorbs important vitamins like vitamin K, B12, riboflavin, and thiamine and it houses friendly bacteria that produce other vitamins and perform other helpful functions.Full Answer >