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- Cilia - BYJUS
Size of villi ranges between 0 5 to 1 6 mm while that of microvilli is about 1 µm in length Additionally, villi are seen on the mucous membrane, specifically in the small intestine Microvilli, on the other hand are small extension seen on the cell membrane of various structures
- Labelled Diagram of Small Intestine - BYJUS
These villi and microvilli together increase the surface area of the mucous membrane Moreover, each villus also has a central channel known as the lacteal that opens into the lymphatic vessels It also contains blood vessels These intestinal villi are numerous and large in jejunum and duodenum but fewer and smaller in the ileum Intestinal Gland
- What is the role of villi in digestion - BYJUS
Villi are the numerous finger like projections, whose walls are richly supplied with blood capillaries and lymph vessels They are able to contract and relax continuously, thus bringing themselves into close contact with the food in the small intestine
- Functions of Small Intestine - BYJUS
The finger-like projections known as villi, drastically increase the surface area of the small intestine for greater absorption of the digested food The blood carries the absorbed food material to different parts of the body Glucose breaks down to form oxygen and carbon dioxide and releases the energy required for various life processes
- What is the role of villi in the absorption of food? Differentiate . . .
The villi are known to provide more surface area within the small intestine for better absorption of the broken down digested food into the blood Absorption: In this process, the digested food within the small intestine is now transported to the blood via the help of villi on the inner walls of the small intestine
- NCERT Solutions Class 7 Science Chapter 2 - BYJUS
The finger-like projections or outgrowth present in the small intestine of our digestive system are called villi The surface area for food absorption and digestive secretion is increased with the help of villi To help students understand this concept clearly, diagrams are included in the solutions to enable visual learning
- Which of the following statements are not true about villi?1. Villi . . .
Each villi is composed of a thin epithelium, blood capillary and a lymphatic vessel (lacteal) The epithelium helps in increasing the surface area for greater absorption of the digested food Whereas, the blood capillary supplied with blood vessels take the absorbed food to each and every cell of the body
- How alveoli similar to villi - BYJUS
Both the alveoli in the lungs and villi in the small intestine are in direct contact with blood capillaries this enables gaseous exchange in the lungs via alveoli, and absorption of nutrients in the small intestine via villi Also, both increase the surface area of absorption
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