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Mention two structural features of small intestine which add to the absorptive capacity?
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!!
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What are the structural features that influence the shapes of cells?
The shapes of cells are influenced by structural features such as the cytoskeleton, cell membrane, and cell adhesion molecules. The cytoskeleton provides support and maintains cell shape, while the cell membrane controls the cell's boundaries and interactions with the environment. Cell adhesion molecules help to maintain connections between cells and shape tissue architecture.
The molecular and structural similarities observed among these organisms is best explained by?
their common evolutionary ancestry and shared genetic material, which have led to the conservation of certain molecular and structural features. This indicates a close evolutionary relationship and a common ancestor from which these organisms have diverged over time.
Structural features that contain the protein actin and help to control the shapes of cells are?
Structural features that contain the protein actin and help to control the shapes of cells are actin filaments, also known as microfilaments. These filaments are part of the cytoskeleton and play a key role in cell shape maintenance, cell movement, and cell division. They can assemble and disassemble rapidly to alter cell shape as needed.
What are the 3 main categories of adaptations?
The three main categories of adaptations are structural, behavioral, and physiological. Structural adaptations refer to physical features that help an organism survive, behavioral adaptations relate to actions or behaviors that aid in survival, and physiological adaptations involve internal changes that enhance an organism's chances of survival.
What structural feature on the surface of a plasma membrane allows cells to recognize one another?
Glycoproteins and glycolipids are structural features on the surface of the plasma membrane that allow cells to recognize one another. These molecules can act as cell identifiers by creating unique patterns that other cells can identify and respond to.
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.
What is the Structural features of bacteria?
They are small and do nothing
What structural features of a chimpanzee?
A Chimpanzee's structural features are quite similar to that of humans. They can walk bipedally, have opposable thumbs and have the same internal anatomy as humans do.
What are some of the special structural features of the stomach?
to keep your acid
Structural features that spatially organize the interior of the cell are?
microtubules
What the structural features of a neuron?
axon, cell body,dendrites
Which structures of the small intestines increase the surface area available for absorption?
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! There are two structures that allow absorbsion: 1) villi which are folds and 2) microvilli, tiny finger like projections on each villi.
What is a structual features?
When referring to a text, the term "structural features" refers to the manner in which the literary elements of the text are assembled.
What is the large surface of the small intestine?
The large surface area of the small intestine is achieved by a combination of anatomical features such as the plicae circularis, the vili, and the microvilli.
What are the structural features of annelids?
they are all earth worms and can be disected without dying.
What is meant by the term structural features when referring to an animal?
Structural features are techniques or props used to create an article, commercial, show, etc. Some examples of structural features are a glossay, a table of contents or graphs in a book.
What is large surface area of the small intestine?
The large surface area of the small intestine is achieved by a combination of anatomical features such as the plicae circularis, the vili, and the microvilli.
