What is the function of the large and small intestines?

Answer 1

Intestines are a long, continuous tube running from the stomach to the anus. Absorption of nutrients and water happens in the intestines. The intestinal tract, include the small intestine, large intestine, and rectum.

The small intestine (small bowel) is approximately 20 to 22 feet long and about one inch in diameter. It moves continually. The small intestines job is to absorb most of the nutrients from what we eat and drink. Soft mucous tissue lines the inside of the small intestine, which is divided into the duodenum, jejunum, and ileum.

The large intestine (colon or large bowel) is about 5 feet long and about 3 inches in diameter. The colon absorbs water from fecal matter, creating stool. As stool enters the rectum, special nerves in there create the urge to defecate.

Answer 2

The large intestine absorbs water from the chyme. Starting the process: The digestive process begins in the mouth. Food is partly broken down by the process of chewing (mastication) and by the chemical action of salivary enzymes (these enzymes are produced by the salivary glands and break down starches into smaller molecules).

On the way to the stomach: the esophagus - After being chewed and swallowed, the food enters the esophagus. The esophagus is a long tube that runs from the mouth to the stomach. It uses rhythmic, wave-like muscle movements (called peristalsis) to force food from the throat into the stomach. This muscle movement gives us the ability to eat or drink even when we're upside-down.

In the stomach - The stomach is a large, sack-like storage organ that churns the food and bathes it in a very strong acid (gastric acid). Food in the stomach that is partly digested and mixed with stomach acids is called chyme.

The small intestine - After being in the stomach, food enters the duodenum, the first part of the small intestine. within the small intestine produces a mixture of disaccharides, peptides, fatty acids, and monoglycerides. The final digestion and absorption of these substances occurs in the villi, which line the inner surface of the small intestine. It then enters the jejunum and then the ileum (the final part of the small intestine). In the small intestine, bile (produced in the liver and stored in the gall bladder), pancreatic enzymes, and other digestive enzymes produced by the inner wall of the small intestine help in the breakdown of food.

In the large intestine - After passing through the small intestine, food passes into the large intestine. In the large intestine, some of the water and electrolytes (chemicals like sodium) are removed from the food. Many microbes (bacteria like Bacteroides, Lactobacillus acidophilus, Escherichia coli, and Klebsiella) in the large intestine help in the digestion process. The first part of the large intestine is called the cecum (the appendix is connected to the cecum). Food then travels upward in the ascending colon. The food travels across the abdomen in the transverse colon, goes back down the other side of the body in the descending colon, and then through the sigmoid colon. The end of the process - Solid waste is then stored in the rectum until it is excreted via the anus.

Answer 3

Intestines are a long, continuous tube running from the stomach to the anus. Absorption of nutrients and water happens in the intestines. The intestinal tract, include the small intestine, large intestine, and rectum.

The small intestine (small bowel) is approximately 20 to 22 feet long and about one inch in diameter. It moves continually. The small intestines job is to absorb most of the nutrients from what we eat and drink. Soft mucous tissue lines the inside of the small intestine, which is divided into the duodenum, jejunum, and ileum.

The large intestine (colon or large bowel) is about 5 feet long and about 3 inches in diameter. The colon absorbs water from fecal matter, creating stool. As stool enters the rectum, special nerves in there create the urge to defecate.

Answer 4

to further churn and breakdown your food so it is small enough to move into the blood as nutrients.

It belongs to the digestive system and is 4-5 metres long