what do you mean by the digestive system in human beings? explain the structure and functions of=
a) Oesophagus
b) Stomach
c) Small Interstine
Answers
Answer:
Explanation:Human digestive system, the system used in the human body for the process of digestion. The human digestive system consists primarily of the digestive tract, or the series of structures and organs through which food and liquids pass during their processing into forms absorbable into the bloodstream.
esophagus:The esophagus is a tube that connects the throat and the stomach. If the mouth is the gateway to the body, then the esophagus is a highway for food and drink to travel along to make it to the stomach. This body part has a very simple function, but can have many disorders.
stomach:The stomach is a muscular organ located on the left side of the upper abdomen. ... As food reaches the end of the esophagus, it enters the stomach through a muscular valve called the lower esophageal sphincter. The stomach secretes acid and enzymes that digest food. Ridges of muscle tissue called rugae line the stomach.
small intestine:The small intestine is the part of the intestines where 90% of the digestion and absorption of food occurs, the other 10% taking place in the stomach and large intestine. The main function of the small intestine is absorption of nutrients and minerals from food.
oesophagus =it passes the food to stomach. stomach- it digest the food by adding many juices like bile , digestive juices etc and small intestine - it helps to outside the waste to anus. hope it will help you....