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Is the chylomicrons are secreted fomthe basal surface of the absorptive cell and taken into the lacteal in the villus?
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What is the absorptive surface area of the small intestine?
The absorptive surface area of the small intestine is actually about 250 square meters (almost 2,700 square feet) – the size of a tennis court! How is this possible? The small intestine has three features which allow it to have such a huge absorptive surface area packed into a relatively small space:1. Mucosal folds: The inner surface of the small intestine is not flat, but thrown into circular folds. This not only increases the surface area, but helps regulate the flow of digested food through your intestine.2. Villi: The folds form numerous tiny projections which stick out into the open space inside your small intestine (or lumen), and are covered with cells that help absorb nutrients from the food that passes through.3. Microvilli: The cells on the villi are packed full of tiny hair like structures called microvilli. This helps increase the surface of each individual cell, meaning that each cell can absorb more nutrients.
Which animal group has muscular foot?
Molluscs, which belong to the animal phylum Mollusca, have a single, "limpet-like" shell on top. According to wikipedia, the shell is secreted by a mantle that covers the upper surface, and the underside consists of a single muscular "foot".
What is a villi in science?
The villi are tiny hair-like appendages which line the small intestine. They increase the surface area of the intestine, helping digestion due to their rich blood supply and single-celled wall, they are able to absorb nutrients. A person with coeliac disease has less, or deficient villi, meaning they are unable to absorb everything they need, ie gluten.
How does the structure of villi adapted to its function?
- villus increase the surface area over which food is absorbed - an epithelium, consisting of only on thin layer of cells, is all that foods have to pass through to be absorbed - protrusions of the epithelium cells increase the surface area for absorption. This projections are referred to as microvilli - protein channels in the microvilli membranes allow rapid absorption of foods by facilitated diffusion and pumps allow rapid absorption by active transport - mitochondria in epithelium cells provide the ATP needed for active transport - blood capillaries inside the villus are very close to the epithelium so the distance for diffusion of foods is very small - a lacteal in the center of the villus carries away fats after absorption
How do prokaryotes breathe?
They move using flaggella in a motor boat propellor sort of way. They also twist their flagella in a corkscrew movement. Glides on secreted slime.
Which epithelium is highly absorptive due to increased surface area cause by microvilli found on free apical surface?
Enterocytes.
Is transitional epithelium highly absorptive because of increased surface area caused by microvilli found on free apical surface?
Yes
How are new proteins moved to the surface of the cells and secreted?
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The absorptive surface of the small intestine is greater than that other human digestive organs because of its length and the presence of?
Villi
The absorptive surface of the small intestine is greater than that of other human digestive organs of its length and the presence of?
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What structure increases surface area in our small intestines and why do you need them?
That is the villi (sing. villus.) The villi are built for absorption in the small intestine. They are small, finger-like projections on the inside of the small intestine. They increase the interior surface area of the small intestine 30-60x and aid digestion.There are different kinds of villi:Villus Capillaries -- Take amino acids and sugars into the blood streamVillus Lacteal -- Collects absorbed chylomicrons, which are lipoproteins composed of triglycerides, cholesterol and amphipathic proteins, and are taken to the rest of the body through the Lymph fluid
What small finger-like projection does not increase the absorptive surface of the small intestine?
Probably you refer to polyps, which are abnormal growths and can be dangerous.
The adaptive advantage associated with the filamentous nature of fungal mycelia is primarily related to?
an extensive surface area well suited for invasive growth and absorptive nutrition.
The small intestine is covered in millions of villi what are villi and what is their job?
Villi are fingerlike projection from a surface and in the intestine they are one cell thick with blood vessels and lacteal. The funciton is to increase the surface area of the intestine and so increasing the ammount of absorption.
What type of the cell does the presence of microvilli typically indicate?
Microviili increase the plasma membrane surface area. They are generally found in absorptive cells. (e.g. intestinal cells)
The absorptive effectiveness of the small intestine is enhanced by increasing the surface area of the mucosal lining which of the following structures accomplish this task?
Plicae circulares and intestinal villi
What is the absorptive surface area of the small intestine?
The absorptive surface area of the small intestine is actually about 250 square meters (almost 2,700 square feet) – the size of a tennis court! How is this possible? The small intestine has three features which allow it to have such a huge absorptive surface area packed into a relatively small space:1. Mucosal folds: The inner surface of the small intestine is not flat, but thrown into circular folds. This not only increases the surface area, but helps regulate the flow of digested food through your intestine.2. Villi: The folds form numerous tiny projections which stick out into the open space inside your small intestine (or lumen), and are covered with cells that help absorb nutrients from the food that passes through.3. Microvilli: The cells on the villi are packed full of tiny hair like structures called microvilli. This helps increase the surface of each individual cell, meaning that each cell can absorb more nutrients.
