Smooth Endoplasmic Reticulum (organelles) cells are responsible for absorption, synthesis, and transport of fats (in intestinal cells). They catalyze reactions involved in these processes.
The small intestine is lined with epithelial cells. These specialized cells have microvilli on their surface, which increase their surface area for absorption. These cells play a key role in the absorption of nutrients and fats from the digestive tract into the bloodstream.
the cell lining of the small intestine is called villi and are small, finger-like projections that are used to increase surface area.
it is an organ!
the ribsomes
At the centre of a cell ---- ---- ----
nucleoli
The cell surface which lines the intestines have villi and microvilli. These are finger-like protrusions which increase the surface vastly.
The organ where nutrients are absorbed is Small intestine
the lining of the small intestine has folds, and are covered with finger-like projections called villi, which are covered with thousands of micro-villi
The different types of molecules that the cell assembles
Four features of the small intestine make it efficient at absorption of digested food: 1. The small intestine is LONG- this ensures food remains in the small intestine long enough for the products of digestion to be fully absorbed into the bloodstrem. 2. The Small intestine is HIGHLY FOLDED into villi (s. villus)- This gives a greater surface area for more efficient diffusion of products into the bloodstream. 3. The small intestine has a RICH BLOOD SUPPLY - Each villus has a network of capillaries so that the products of digestion are carried away from the small intestine efficiently. 4. The epithelium of the small intestine in the villi is only ONE CELL THICK - for easier diffusion of the products of digestion into the bloodstream. The walls of the capillaries are only one cell thick as well!!
1. The small intestine is LONG- this ensures food remains in the small intestine long enough for the products of digestion to be fully absorbed into the bloodstrem. 2. The Small intestine is HIGHLY FOLDED into villi (s. villus)- This gives a greater surface area for more efficient diffusion of products into the bloodstream. 3. The small intestine has a RICH BLOOD SUPPLY - Each villus has a network of capillaries so that the products of digestion are carried away from the small intestine efficiently. 4. The epithelium of the small intestine in the villi is only ONE CELL THICK - for easier diffusion of the products of digestion into the bloodstream. The walls of the capillaries are only one cell thick as well!!