Villi
Villi
These finger- like structures are called villi. They serve to increase the surface area of the small intestine so that more nutrients can be absorbed faster.
Villi are located in the small intestine, specifically in the lining of the intestinal walls. They increase the surface area of the intestine, allowing for better absorption of nutrients from digested food into the bloodstream.
Inner folds are called villi and they increase the surface area and increase the efficiency of digestion and absorption by increasing the contact of intestinal secretions and food particles and also food particles and the inner surface lining of intestine.
No cells of small intestine do not have cilia. The main functions of small intestine is absorption of digested food. Hence, its surface area has to be large. Villi and microvilli serve this purpose and increase the surface area of mucosa many fold. Also, the diameter of small intestine if large enough so no cilia is required, for passage of food too.
These are called villi. They are found in the small intestine and serve to increase the surface area for nutrient absorption through the intestinal walls into the bloodstream or lymphatic system.
The organ in the abdominal cavity that has folds similar to those in the stomach wall is the small intestine. The inner lining of the small intestine features folds called plicae circulares, which increase the surface area for absorption, much like the rugae in the stomach that allow for expansion and enhance gastric function. Both structures serve to optimize their respective organ functions through increased surface area.
In a nutshell, the absorption of water.
The small intestine is in the gastrointestinal tract after the stomach. It is followed by the large intestine. A lot of the digestion and absorption of food takes place here.
The short extensions of the cell wall are called microvilli. They are found on the surface of some cells and serve to increase surface area for absorption and secretion of substances.
Absorption of water and serve as passage to unabsorbed food.
Microvilli are only found in animal cells, particularly in cells lining the small intestine and kidney tubules. They increase the surface area of the cell membrane for absorption and secretion processes. Plants do not have microvilli, but they do have other structures that serve similar functions, such as root hairs for absorbing water and nutrients.