explain how food gets digested and absorbed in the human digestive system
Answers
i will request you to find in google
you may get the answer there
it is so long answer that I didn't wrote ok
plz search in google
this may help you out
hi mate,
==> we know that the Columnar epithelium is located in the digestive tract such as the stomach, large intestine, small intestine and functions as a barrier to bacteria and other microbes but permits the absorption of digested food.
,
==> we know that the small intestine has millions of tiny finger-like projections called villi.
==>These villi increase the surface area for more efficient food absorption. that's why
small intestine is designed to have maximum absorption of food.
==>Within these villi, many blood vessels are present that absorb the digested food and carry it to the blood stream.
==> we know that the the small intestine has millions of tiny finger-like projections called villi. These villi increase the surface area for more efficient food absorption. Within these villi, many blood vessels are present that absorb the digested food and carry it to the blood stream.
==> and also we know that the food breakdown into glucose and then the cerb's cycle reaction takes that is given in the book class 10 bio and the rest material move in small intestine small villi like projection aborb the nutrients and that are absorb by cell and the cellulose of food which is indigested expelled out.
==> Digestive juice produced by the small intestine combines with pancreatic juice and bile to complete digestion.
==> The body completes the breakdown of proteins, and the final breakdown of starches produces glucose molecules that absorb into the blood.
===>>The small intestine, despite its name, is the longest part of the gastrointestinal tract.
==>> It works with other organs of the digestive system to further digest food after it leaves the stomach and to absorb nutrients.
==>Bile emulsifies (breaks into small particles) lipids (fats), which aids in the mechanical digestion of fats. The pancreas and gland cells of the small intestine secrete digestive enzymes that chemically break down complex food molecules into simpler ones.
==>... When food passes through the duodenum, digestion is complete.Most chemical digestion takes place in the duodenum by chemicals secreted by the liver, pancreas and small intestine.
==>The other two sections of the small intestine, the jejunum and the ileum, absorb food molecules by way of the villi directly into the blood stream.
==>The pyloric sphincter controls the flow of chyme from the stomach into the small intestine.
==>We previously learned that the pyloric sphincter controls the flow of chyme as it passes out of the stomach and into the small intestine. Chyme is the name given to the partially digested food mass.
==> They are unable to digest plant material directly, because they lack enzymes to break down cellulose in the cell walls.
==> Digestion in ruminants occurs sequentially in a four-chambered stomach.
==> Small intestine.
Digestive juice produced by the small intestine combines with pancreatic juice and bile to complete digestion.
==> The body completes the breakdown of proteins, and the final breakdown of starches produces glucose molecules that absorb into the blood.
==> If undigested food particles are too large to pass through the mucosal barrier and into the bloodstream, these particles will putrefy in the intestines, and could be absorbed into the blood .
==>Large Intestine. ... The wall of the large intestine has the same types of tissue that are found in other parts of the digestive tract but there are some distinguishing characteristics. The mucosa has a large number of goblet cells but does not have any villi.
==> The longitudinal muscle layer, although present, is incomplete.
Intestinal villi (singular: villus) are small, finger-like projections that extend into the lumen of the small intestine.
==>... Villi increase the internal surface area of the intestinal walls making available a greater surface area for absorption.
==>The rectum is a chamber that begins at the end of the large intestine, immediately following the sigmoid colon, and ends at the anus (see also Overview of the Anus and Rectum).
==>Ordinarily, the rectum is empty because stool is stored higher in the descending colon.
==>Functions of the Villi
We've already stated that the small
intestine's main job is to absorb nutrients from the food you eat and that your villi help by increasing the surface area the intestine has for absorption.
i hope it helps you.