What structures in the small intestine are lined with capillaries that absorb nutrients?
1 answer:
Answer:
"Absorption is the process in which digested food molecules move from the wall of samll intestine into blood or lymph"
Explanation:
Small intestine is composed of three main regions:
1. Duodenum:
It is the first part of samll intestine where acidic chyme from stomach enter and become alkaline due to mixing with bile and pancreatic juice. Chemical digestion of carbohydrate, protein and fats is completed here.
2. Jejunum:
Jejunum is the site where about 90% of absorption of digested food takes place. It is lined with small hair like projection called villi and micro-villi. these villi are lined with blood vessels (capillaries as shown in the figure) and lymph. After absorption of small peptides, amino acids, glucose and fructose, they reach to blood capillaries inside villi and micro villi. From here digested food particles are transported to liver and other parts where they are needed.
3. Ileum:
It is the last and longest part of small intestine about 12 feet long. <span>ileum contains receptors for absorption of vitamin B12 and bile salts.</span>
"Absorption is the process in which digested food molecules move from the wall of samll intestine into blood or lymph"
Explanation:
Small intestine is composed of three main regions:
1. Duodenum:
It is the first part of samll intestine where acidic chyme from stomach enter and become alkaline due to mixing with bile and pancreatic juice. Chemical digestion of carbohydrate, protein and fats is completed here.
2. Jejunum:
Jejunum is the site where about 90% of absorption of digested food takes place. It is lined with small hair like projection called villi and micro-villi. these villi are lined with blood vessels (capillaries as shown in the figure) and lymph. After absorption of small peptides, amino acids, glucose and fructose, they reach to blood capillaries inside villi and micro villi. From here digested food particles are transported to liver and other parts where they are needed.
3. Ileum:
It is the last and longest part of small intestine about 12 feet long. <span>ileum contains receptors for absorption of vitamin B12 and bile salts.</span>
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Answer:
The correct option in blank is anion.
Explanation:
Ionic compound is formed by the transfer of electron from one atom to another atom. When an electropositve atom lose an electron it form cation, whereas as anion is formed when an atom gain an electron. These actions and anions then attract each other and form an ionic compound.
I hope it will help you.
Example:
The formation of NaCl is best example of ionic compound. Na has one electron in its outer most shell which can easily be removed to form Na+, while Cl has seven electron in its outer most shell so it can easily gain an electron lost by Na to form Cl-. Then these ions attract each other and form NaCl as shown in the figure.
The correct option in blank is anion.
Explanation:
Ionic compound is formed by the transfer of electron from one atom to another atom. When an electropositve atom lose an electron it form cation, whereas as anion is formed when an atom gain an electron. These actions and anions then attract each other and form an ionic compound.
I hope it will help you.
Example:
The formation of NaCl is best example of ionic compound. Na has one electron in its outer most shell which can easily be removed to form Na+, while Cl has seven electron in its outer most shell so it can easily gain an electron lost by Na to form Cl-. Then these ions attract each other and form NaCl as shown in the figure.