Microvilli are the tiny projections in the cell lining the villi. It increases the surface area of absorption thereby increasing absorption.
Microvilli on the surface of epithelial cells such as those lining the intestine increase the cell’s surface area and thus facilitate the absorption of ingested food and water molecules. Microvilli are also sometimes called the intestinal brush border.
The combination of circular folds, villi and microvilli helps absorption by increasing the surface area of the small intestine by 30 to 600 times.
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Where the Brush border of small intestine cells is formed ?</h3>
The innermost layer lining the lumen of the alimentary canal is the mucosa. This layer forms irregular folds (rugae) in the stomach and small finger-like folding called villi in the small intestine.
The cells lining the villi produce numerous microscopic projections called microvilli giving a brush border appearance found on the apical surface of some epithelial cells. These modifications increase the surface area enormously and help in secretion and absorption.
Microvilli are covered in the plasma membrane, which encloses cytoplasm and microfilaments. Though these are cellular extensions, there are little or no cellular organelles present in the microvilli. Hence, the brush border of small intestine cells is formed of microvilli.
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Answer:
The settlement in the Mississippian areas.
Explanation:
Native Americans had a culture in the Mississippi valley. Cahokia reached its peak between the 10th and the 14th century. Numerous settlements located near the river managed trade networks that stretched to all direction of North America. The Cahokia built large mounds for ceremonial, religious, or residential Europe for the elite members in the community. The first large scale of civilization in America was the Mississippian culture. Mounds are very much associated with the Cahokia located in Illinois. Many artifacts have found at the Cahokia mounds including stones, tools, pottery, knives, shells, and arrowheads.
Answer:
The earth’s axis of rotation is tilted 66.5 degrees with respect to its orbital plane around the sun and its axis of rotation is inclined 23.5 degrees from the perpendicular, with respect to this plane.
I believe the answer is: <span>desert, hot, rugged
This climate made the region have insufficient water to sustain a lot of people and make it really hard for many agricultural crops to grow.
Because of this, not many populations able to survive in this area and many of them choose to migrate to another place.</span>
