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Villi are finger-like projections on the lining of the small intestine. After digestion is finished off, the nutrients and digested food goes to the villi, then from the villi to blood capillaries. Blood capillaries are small blood vessels that contain tiny holes through with tissue fluid leaks out. Then, the nutrients go from the blood capillaries to the tissue fluid. The tissue fluid is mainly water, it surrounds the tissues in our body and it forms a continuous link between the blood plasma (liquid part of the blood that helps the blood to circulate) and the cells. After going to the tissue fluid, the nutrients go to the blood plasma and then to the cells where it is used up (oxygen and chemicals from our food is separated from waste materials and carbon dioxide) Arteries carry oxygen from the blood cells to the body cells and veins carry carbon dioxide. After going to the cells, the nutrients go to the tissues. Hope this helped. I was also confused first but then my teacher explained it to me. :)
What else can I help you with?
Where do the nutrients that pass through villi go?
The nutrients that pass through villi in the small intestine are absorbed into the bloodstream. From there, they are transported to various cells and tissues in the body where they are used for energy, growth, and repair. Any excess nutrients are stored for later use.
How does the composition of blood changes as it flows through the villi?
The blood flow in through the villi changes in an increase as the intestine near the villi is wide to go through.
Who does the small intestines help with digestion?
the lengthb increase the surface area so that it can better absorb nutrients
What does does villi do in digestion?
The wall of the small intestine has folds that bear fingerlike prjections called villi. Villi in turn have projections called microvilli. The products of digestion are absorbed by microvilli and they enter the blood capillaries and the lacteals of the Villi.
Were does blood go to get nutrients?
the nutrients enter the blood in the small intestine. The lining of the small intestine is called the villi, that is were the blood is absorbed into the bloodstream
From the maternal capillaries nutrients diffuse into the capillaries of the chorionic villi and go to the fetus via the?
Umbilical cord or if old enough put on a mirror and snort it
How are the small intestines adapted for diffusion?
- The small intestine needs a large surface area as it is adapted for absorbing nutrients from food that the body needs. - The small intestine has villi, which increase the overall surface area, maximizing the area available for absorbing nutrients. - The villi have very good blood supplies, as they each have a capillary in them, so when substances are diffused they go straight into the blood stream. Just like the alveoli in the lungs, the epithelium is only one cell thick meaning that there is less distance for the nutrients to diffuse across. I think there might be more information about this on the BBC Bitesize website, but in the meantime I hope this helps
What structure increase surface area for absorption of nutrients?
The structure that increases surface area for absorption of nutrients in the small intestine is called the villi. Villi are tiny, finger-like projections that line the inner wall of the small intestine and are covered in even smaller hair-like structures called microvilli. Together, villi and microvilli greatly increase the surface area available for the absorption of nutrients from digested food.
Where are proteins absorbed?
Enzymes, Glucose and The Protein work together to enter the body then go through the small intestine and rubbing onto the villi
Finger-like structures that cover the inner wall of the small intestine?
These are called villi and there are millions of them that line the small intestine and large intestine (Colon) they absorb the nutrients particularly in the Colon where they absorb liquid into the blood stream. This is what makes your stools hard (constipation) and painful to pass if you wait too long to go for a number 2. The peristaltic action moves the liquid along the small and large intestines.
Most of the nutrients from food are absorbed through the small intestines?
No it is absorbed in the large intestine through what is called Villi and then enters the circulatory system.--The small intestine doesn't absorb nutrients from blood. Rather, it's blood that obtains nutrients from the small intestine. And yes, absorption of nutrients occurs in the small intestine, whereas the large intestine functions for resorption of salts and water and removal of wastes.
What do villi do in the small intestine?
Surface area is the amount of surface that is exposed in a space. For instance, a sheet of flat paper covers the same amount of area as a bigger piece of crumpled up paper, but the bigger piece of paper has more surface area. Folding and crumpling surfaces up makes it easy to fit more surface area into a smaller space. Since villi are very tiny folds that stick out from the small intestines, more surface area is fit inside a smaller space. If you were to "flatten out" all the little villi of the small intestines it would cover a football field. Not so if the inside of the intestine were smooth.
