Explain human digestive system with the help of diagram?
Answers
Answer:
Refer the attachment !!
Explanation:
The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion. Digestion involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body. The process of digestion has three stages.
Explanation:
The human digestive system is a series of organs that converts food into essential nutrients that are absorbed into the body. The digestive organs also move waste material out of the body. The enzymes in saliva help break down foods, and the lubrication function of saliva makes it easier for food to be swallowed.
The diagram below shows the structure and functions of the human digestive system.
Let learn the different parts of the human digestive system.
Mouth — It includes teeth, salivary glands and tongue. It is the beginning of the digestive tract and the process of digestion begins from the mouth, where teeth help by breaking and grinding the food molecules followed by the saliva mixing with the food particles.
Pharynx –It is a fibromuscular, Y-shaped tube-like structure, attached to the terminal end of the mouth. It is involved in the passage of chewed food from the mouth through the esophagus.
Esophagus —This is a muscular tube, measuring 25 cm long and located near the trachea connecting to the pharynx. It is the upper part of the gastrointestinal tract and is mainly involved in delivering the food particles from the mouth to the stomach.
Stomach –It is a hollow and muscular organ, situated towards the left side of the abdominal cavity and beneath the diaphragm. It is a vital organ, which functions by storing the food, provides enough time to digest meals, produces hydrochloric acid and digestive enzymes that maintain the process of digestion.
Small Intestine –It is a thin and long tube-like structure measuring about 9 to 10 feet long and also the part of the lower gastrointestinal tract. The small intestine is located just behind the stomach, which is found completely coiled and consists of folds and ridges.
Large Intestine –This is a thick and long tube-like structure measuring about 4 to 5 feet in length. It is present just beneath the stomach and wraps over the superior and lateral edges of the small intestine. It functions by absorbing water and support in the breakdown of wastes to fetch small nutrients.
Liver –The liver is a large, reddish-brown, triangular-shaped organ of the digestive system, which is located to the right of the stomach. It functions by processing the absorbed food from the small intestine, produces bile, which helps in the digestion of fat in the small intestine.
