5. Why is the small intestine an important site of absorption for toxicants?
5. Why is the small intestine an important site of absorption for toxicants?
Homework Answers
Absorption for toxicants or any molecule in Digestive tract , depends on their fat solubility ( non-polar nature) in various parts of body. ( Lipid solubility and molecular size are important in determining how efficiently toxic substances are transported across the digestive tract epithelium and into the bloodstream. ) Proportion of charged or neutral form of a toxicant depends pKa of polar group present in toxicant molecules. In stomach pH is very low (-1-1.5) , thus most of toxic substances are in protonated form at that pH , thus major portion is water soluble , as it enters in small intestine pH increases to normal level thus fraction of Lipid soluble forms increase, and absorption in result.
Thus, Absorption of toxic substances in the digestive tract occurs primarily in the small intestine.
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5. Why is the small intestine an important site of absorption
for toxicants?
A means of absorption that occurs in the small intestine is
A means of absorption that occurs in the small intestine is
Please answer 1-5 The primary site of digestion is the while the primary site of absorption...
Please answer 1-5
The primary site of digestion is the while the primary site of absorption is the Select one: O a stomach, small intestine O b. small intestine, large intestine O c. pancreas, ileum O d. duodenum, ileum The plasma membrane is composed of that are on the surface and embedded in the membrane. Select one O a carbohydrates, proteins O b. phospholipids, proteins O c nucleic acids, phospholipids Od phospholipids, carbohydrates Where is your poop made? Select one:...
Caffeine is a weak base with pKa of 14. In the small intestine, with a pH...
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2. The drawing to the right represents absorption in the small Lumen of intestine intestine (or the proximal tubule...
2. The drawing to the right represents absorption in the small Lumen of intestine intestine (or the proximal tubule of the kidney).(7 pts) A B a) What solute is represented by A? What solute is represented by B? What solute is represented by C? b) What type of transport is bringing solute A into the ICF absorptive cell from the lumen? c) What type of transport is removing solute B from the absorptive cell? d) What type of transport is...
This part of the small intestine is involved in nutrient uptake and water absorption o Macrophages....
This part of the small intestine is involved in nutrient uptake and water absorption o Macrophages. o Ileum. o Jejunum. o Duodenum.
Tight junctions are particularly important in epithelia like the lining of the small intestine. Why? A....
Tight junctions are particularly important in epithelia like the lining of the small intestine. Why? A. Without tight junctions, it would not be possible to maintain the gradient for nutrients like glucose and amino acids that allow them to be absorbed into the circulatory system. B. Without tight junctions, bulk transport of oxygen would not be possible. C. Without tight junctions, the cells would not adhere to one another and the sheets of cells would come apart. D. Without tight...
Tight junctions are particularly important in epitheliale the lining of the small intestine Why? A Without...
Tight junctions are particularly important in epitheliale the lining of the small intestine Why? A Without light junctions, it would not be possible for coils to communicate quickly with adjacent cells by sending small molecules through these connections in the cytoplasm B Without tight junctions, bulk transport of oxygen would not be possible C Without tight junctions, it would not be possible to maintain the gradient for nutrients like glucose and amino acids that allow them to be absorbed into...
The most useful agent for the prevention of absorption of toxicants is: a. hasten toxicant detoxification...
The most useful agent for the prevention of absorption of toxicants is: a. hasten toxicant detoxification b. leave unabsorbed material c. ensure airway so that breathing and circulation are adequate d. limit further absorption of toxicant
1. The site of nutrient absorption: 2. The site of water absorption: 3. The site of...
1. The site of nutrient absorption: 2. The site of water absorption: 3. The site of bile production: 4. The site of bile storage: 5. Another name for the voice box is: 6. The flap that covers the opening to larynx and prevent food entry into lungs: 7. Another name for the windpipe, which has cartilaginous rings (C-rings):_ 8. What is the skeletal muscle that separates the thoracic & abdominal cavities? 9. What gland regulates cell metabolism? 10. What structure...
What percentage of the water entering the small intestine is absorbed by the small intestine? |...
What percentage of the water entering the small intestine is absorbed by the small intestine? | 90 % In contrast, what percentage of the water entering the small intestine is absorbed by the large intestine? What percentage of the water entering the small intestine is absorbed by the small intestine? In contrast, what percentage of the water entering the small intestine is absorbed by the large intestine?
Please answer 1-5
The primary site of digestion is the while the primary site of absorption is the Select one: O a stomach, small intestine O b. small intestine, large intestine O c. pancreas, ileum O d. duodenum, ileum The plasma membrane is composed of that are on the surface and embedded in the membrane. Select one O a carbohydrates, proteins O b. phospholipids, proteins O c nucleic acids, phospholipids Od phospholipids, carbohydrates Where is your poop made? Select one:...
2. The drawing to the right represents absorption in the small Lumen of intestine intestine (or the proximal tubule of the kidney).(7 pts) A B a) What solute is represented by A? What solute is represented by B? What solute is represented by C? b) What type of transport is bringing solute A into the ICF absorptive cell from the lumen? c) What type of transport is removing solute B from the absorptive cell? d) What type of transport is...
Tight junctions are particularly important in epitheliale the lining of the small intestine Why? A Without light junctions, it would not be possible for coils to communicate quickly with adjacent cells by sending small molecules through these connections in the cytoplasm B Without tight junctions, bulk transport of oxygen would not be possible C Without tight junctions, it would not be possible to maintain the gradient for nutrients like glucose and amino acids that allow them to be absorbed into...
1. The site of nutrient absorption: 2. The site of water absorption: 3. The site of bile production: 4. The site of bile storage: 5. Another name for the voice box is: 6. The flap that covers the opening to larynx and prevent food entry into lungs: 7. Another name for the windpipe, which has cartilaginous rings (C-rings):_ 8. What is the skeletal muscle that separates the thoracic & abdominal cavities? 9. What gland regulates cell metabolism? 10. What structure...
What percentage of the water entering the small intestine is absorbed by the small intestine? | 90 % In contrast, what percentage of the water entering the small intestine is absorbed by the large intestine? What percentage of the water entering the small intestine is absorbed by the small intestine? In contrast, what percentage of the water entering the small intestine is absorbed by the large intestine?
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