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How do villi of the small intestine increase the rate of nutrients absorption?
By increasing the surface area of the intestinal wall.
Which digestive organ is responsible for digestion and absorption of nutrients in earthworms?
In earthworms, the digestive organ responsible for digestion and absorption of nutrients is the intestine. The intestine is a long, coiled structure where food is further broken down by enzymes and where the absorption of nutrients into the bloodstream takes place. The presence of typhlosole, a fold in the intestinal wall, increases the surface area for absorption, making the process more efficient.
What are the plicae circulares used for?
Plicae circulares are folds in the small intestine that increase surface area for nutrient absorption. They help to slow down the movement of food and increase contact with the intestinal wall for efficient absorption of nutrients.
Is distension or irritation the major stimulus for production of intestinal fluid of the intestinal mucosa by hypertonic or acidic chyme?
Distension is the major stimulus for production of intestinal fluid in response to hypertonic or acidic chyme. The stretching of the intestinal wall triggers the release of fluid to help dilute the chyme and aid in digestion and absorption of nutrients.
Modifications of the intestinal wall the surface area for absorption?
Villi Microvilli Plicae Circulares
What is the purpose of the villi and microville in the intestinal tract?
The villi and microvilli in the intestinal tract increase the surface area for absorption of nutrients from digested food. Villi are finger-like projections on the intestinal wall, while microvilli are smaller projections on the surface of cells within the villi. This increased surface area allows for more efficient absorption of nutrients into the bloodstream.
How could absorption in the intestine of an earthworm be increased without increasing the intestines length?
Folding of the intestinal wall into intestinal villi, like in our gut.
What is the purpose of all the folds of the intestinal lining?
The intestinal lining is where the absorption of nutrients from food takes place. In order to be efficient the intestinal lining needs as large a surface area as possible and this can be done by folding (for an example, get a piece of paper and fold it up into a concertina, this is the same surface area but reduced length, exactly what happens in the intestinal wall)
What is the function of the typhlosole on a earthworm?
The typhlosole is a fold in the intestinal wall of an earthworm that increases the surface area for absorption of nutrients. It helps in the digestion and absorption of food in earthworms by providing more surface area for enzymes to break down food particles and for nutrients to be absorbed.
Which layer of the intestinal wall will first absorb nutrients from the lumen?
longitudinal muscle
What is it when nutrients move through the wall of the digestive system into the blood stream?
absorption
What does absorption of the digestive system mean?
It means that it involes the movement of nutrients through the wall of your digestive system into your blood. Absorption
