Understanding the Lower Digestive tract: Small Intestine to Rectum - AP Biology
Card 1 of 112
Why are villi found in the small intestine, but not in the stomach?
Why are villi found in the small intestine, but not in the stomach?
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The villi are helpful in increasing the surface area of the small intestine. This greatly increases the absorptive capabilities of the small intestine. The stomach has no villi, and does not contribute to absorption of macromolecules.
The villi are helpful in increasing the surface area of the small intestine. This greatly increases the absorptive capabilities of the small intestine. The stomach has no villi, and does not contribute to absorption of macromolecules.
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Which of the following segments of the digestive system has the primary job of digesting food?
Which of the following segments of the digestive system has the primary job of digesting food?
Tap to reveal answer
The duodenum, in the small intestine, is a site of protein, carbohydrate, and fat digestion.
The jejunum is a site of protein and fat absorption. The ileum is a site of salt, vitamin, and excess molecule absorbtion. The colon is a segment of the large intestine for water and ion absortion. Each of these work to absorb different molecules, but do not significantly contribute to their digestion.
The duodenum, in the small intestine, is a site of protein, carbohydrate, and fat digestion.
The jejunum is a site of protein and fat absorption. The ileum is a site of salt, vitamin, and excess molecule absorbtion. The colon is a segment of the large intestine for water and ion absortion. Each of these work to absorb different molecules, but do not significantly contribute to their digestion.
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Jim's body is able to produce bile salts, but unable to store it in large quantities. As a result, he cannot eat too much fat at once or it can be harmful to his digestive system. The pancreas and large intestine are not involved in bile storage.
Which of the following organs is Jim missing?
Jim's body is able to produce bile salts, but unable to store it in large quantities. As a result, he cannot eat too much fat at once or it can be harmful to his digestive system. The pancreas and large intestine are not involved in bile storage.
Which of the following organs is Jim missing?
Tap to reveal answer
The role of the gall bladder is to store bile salts, but it does not produce them. Rather, bile salts are produced by the liver and transported to the gall bladder for storage.
The role of the gall bladder is to store bile salts, but it does not produce them. Rather, bile salts are produced by the liver and transported to the gall bladder for storage.
← Didn't Know|Knew It →
Nutrient-rich blood moves from the small intestine to the liver via which of the following structures?
Nutrient-rich blood moves from the small intestine to the liver via which of the following structures?
Tap to reveal answer
The hepatic portal system involves the capillaries of the small intestine and capillaries of the liver. A portal system refers to two different capillary beds, connected by arterioles, that both receive blood before it returns to the heart for reoxygenation. The prefix "hepa-" refers to the liver.
The pancreatic duct transfers digestive enzymes from the pancreas into the lumen of the small intestine. Lacteal vessels receive fats from the small intestine and carry them into the lymphatic system. The pulmonary circuit refers to the region of the circulatory system that carries blood from the right ventricle to the lungs, and back to the left atrium.
The hepatic portal system involves the capillaries of the small intestine and capillaries of the liver. A portal system refers to two different capillary beds, connected by arterioles, that both receive blood before it returns to the heart for reoxygenation. The prefix "hepa-" refers to the liver.
The pancreatic duct transfers digestive enzymes from the pancreas into the lumen of the small intestine. Lacteal vessels receive fats from the small intestine and carry them into the lymphatic system. The pulmonary circuit refers to the region of the circulatory system that carries blood from the right ventricle to the lungs, and back to the left atrium.
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Beginning at the stomach, what is the order of the parts of the small intestine?
Beginning at the stomach, what is the order of the parts of the small intestine?
Tap to reveal answer
When digested food exits the stomach, it passes through the pyloric sphincter and enters the duodenum, the first region of the small intestine. The duodenum is the introduction point for the pancreatic digestive enzymes, as well as the neutralization of stomach acid. The majority of chemical digestion occurs in the duodenum. The middle region of the small intestine is the jejunum, and the final region is the ileum. These regions are primarily responsible for nutrient absorption and have the largest concentration of microvilli. After passing through the ileum, the digested matter enters the large intestine.
When digested food exits the stomach, it passes through the pyloric sphincter and enters the duodenum, the first region of the small intestine. The duodenum is the introduction point for the pancreatic digestive enzymes, as well as the neutralization of stomach acid. The majority of chemical digestion occurs in the duodenum. The middle region of the small intestine is the jejunum, and the final region is the ileum. These regions are primarily responsible for nutrient absorption and have the largest concentration of microvilli. After passing through the ileum, the digested matter enters the large intestine.
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Which is not a structure of the small intestine?
Which is not a structure of the small intestine?
Tap to reveal answer
Food is converted into a bolus upon swallowing, then into chyme in the stomach. The chyme travels from the stomach into the first part of the small intestine, the duodenum. The chyme then moves through the jejunum, then through the ileum before entering the large intestine. Villi are finger-like projections of the small intestine that increase the surface area of the epithelium to maximize nutrient absorption. The ilium is a part of the hip bone.
Food is converted into a bolus upon swallowing, then into chyme in the stomach. The chyme travels from the stomach into the first part of the small intestine, the duodenum. The chyme then moves through the jejunum, then through the ileum before entering the large intestine. Villi are finger-like projections of the small intestine that increase the surface area of the epithelium to maximize nutrient absorption. The ilium is a part of the hip bone.
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Which of the following is not secreted by the pancreas into the duodenum?
Which of the following is not secreted by the pancreas into the duodenum?
Tap to reveal answer
Pepsin is a protein degrading enzyme that is released by the stomach. All the other choices are released by the pancreas into the duodenum.
Pepsin is a protein degrading enzyme that is released by the stomach. All the other choices are released by the pancreas into the duodenum.
← Didn't Know|Knew It →
What is the purpose of microvilli in the small intestine?
What is the purpose of microvilli in the small intestine?
Tap to reveal answer
Microvilli are found at the microscopic level within the digestive tract to help increase surface area. The increased surface area aids in the absorption of nutrients as they pass through the small intestine. Microvilli allow for folds in the digestive tract, which in turn, increase the amount of area available for nutrient absorption.
Microvilli are found at the microscopic level within the digestive tract to help increase surface area. The increased surface area aids in the absorption of nutrients as they pass through the small intestine. Microvilli allow for folds in the digestive tract, which in turn, increase the amount of area available for nutrient absorption.
← Didn't Know|Knew It →
Why are villi found in the small intestine, but not in the stomach?
Why are villi found in the small intestine, but not in the stomach?
Tap to reveal answer
The villi are helpful in increasing the surface area of the small intestine. This greatly increases the absorptive capabilities of the small intestine. The stomach has no villi, and does not contribute to absorption of macromolecules.
The villi are helpful in increasing the surface area of the small intestine. This greatly increases the absorptive capabilities of the small intestine. The stomach has no villi, and does not contribute to absorption of macromolecules.
← Didn't Know|Knew It →
Which of the following segments of the digestive system has the primary job of digesting food?
Which of the following segments of the digestive system has the primary job of digesting food?
Tap to reveal answer
The duodenum, in the small intestine, is a site of protein, carbohydrate, and fat digestion.
The jejunum is a site of protein and fat absorption. The ileum is a site of salt, vitamin, and excess molecule absorbtion. The colon is a segment of the large intestine for water and ion absortion. Each of these work to absorb different molecules, but do not significantly contribute to their digestion.
The duodenum, in the small intestine, is a site of protein, carbohydrate, and fat digestion.
The jejunum is a site of protein and fat absorption. The ileum is a site of salt, vitamin, and excess molecule absorbtion. The colon is a segment of the large intestine for water and ion absortion. Each of these work to absorb different molecules, but do not significantly contribute to their digestion.
← Didn't Know|Knew It →
Jim's body is able to produce bile salts, but unable to store it in large quantities. As a result, he cannot eat too much fat at once or it can be harmful to his digestive system. The pancreas and large intestine are not involved in bile storage.
Which of the following organs is Jim missing?
Jim's body is able to produce bile salts, but unable to store it in large quantities. As a result, he cannot eat too much fat at once or it can be harmful to his digestive system. The pancreas and large intestine are not involved in bile storage.
Which of the following organs is Jim missing?
Tap to reveal answer
The role of the gall bladder is to store bile salts, but it does not produce them. Rather, bile salts are produced by the liver and transported to the gall bladder for storage.
The role of the gall bladder is to store bile salts, but it does not produce them. Rather, bile salts are produced by the liver and transported to the gall bladder for storage.
← Didn't Know|Knew It →
Nutrient-rich blood moves from the small intestine to the liver via which of the following structures?
Nutrient-rich blood moves from the small intestine to the liver via which of the following structures?
Tap to reveal answer
The hepatic portal system involves the capillaries of the small intestine and capillaries of the liver. A portal system refers to two different capillary beds, connected by arterioles, that both receive blood before it returns to the heart for reoxygenation. The prefix "hepa-" refers to the liver.
The pancreatic duct transfers digestive enzymes from the pancreas into the lumen of the small intestine. Lacteal vessels receive fats from the small intestine and carry them into the lymphatic system. The pulmonary circuit refers to the region of the circulatory system that carries blood from the right ventricle to the lungs, and back to the left atrium.
The hepatic portal system involves the capillaries of the small intestine and capillaries of the liver. A portal system refers to two different capillary beds, connected by arterioles, that both receive blood before it returns to the heart for reoxygenation. The prefix "hepa-" refers to the liver.
The pancreatic duct transfers digestive enzymes from the pancreas into the lumen of the small intestine. Lacteal vessels receive fats from the small intestine and carry them into the lymphatic system. The pulmonary circuit refers to the region of the circulatory system that carries blood from the right ventricle to the lungs, and back to the left atrium.
← Didn't Know|Knew It →
Beginning at the stomach, what is the order of the parts of the small intestine?
Beginning at the stomach, what is the order of the parts of the small intestine?
Tap to reveal answer
When digested food exits the stomach, it passes through the pyloric sphincter and enters the duodenum, the first region of the small intestine. The duodenum is the introduction point for the pancreatic digestive enzymes, as well as the neutralization of stomach acid. The majority of chemical digestion occurs in the duodenum. The middle region of the small intestine is the jejunum, and the final region is the ileum. These regions are primarily responsible for nutrient absorption and have the largest concentration of microvilli. After passing through the ileum, the digested matter enters the large intestine.
When digested food exits the stomach, it passes through the pyloric sphincter and enters the duodenum, the first region of the small intestine. The duodenum is the introduction point for the pancreatic digestive enzymes, as well as the neutralization of stomach acid. The majority of chemical digestion occurs in the duodenum. The middle region of the small intestine is the jejunum, and the final region is the ileum. These regions are primarily responsible for nutrient absorption and have the largest concentration of microvilli. After passing through the ileum, the digested matter enters the large intestine.
← Didn't Know|Knew It →
Which is not a structure of the small intestine?
Which is not a structure of the small intestine?
Tap to reveal answer
Food is converted into a bolus upon swallowing, then into chyme in the stomach. The chyme travels from the stomach into the first part of the small intestine, the duodenum. The chyme then moves through the jejunum, then through the ileum before entering the large intestine. Villi are finger-like projections of the small intestine that increase the surface area of the epithelium to maximize nutrient absorption. The ilium is a part of the hip bone.
Food is converted into a bolus upon swallowing, then into chyme in the stomach. The chyme travels from the stomach into the first part of the small intestine, the duodenum. The chyme then moves through the jejunum, then through the ileum before entering the large intestine. Villi are finger-like projections of the small intestine that increase the surface area of the epithelium to maximize nutrient absorption. The ilium is a part of the hip bone.
← Didn't Know|Knew It →
Which of the following is not secreted by the pancreas into the duodenum?
Which of the following is not secreted by the pancreas into the duodenum?
Tap to reveal answer
Pepsin is a protein degrading enzyme that is released by the stomach. All the other choices are released by the pancreas into the duodenum.
Pepsin is a protein degrading enzyme that is released by the stomach. All the other choices are released by the pancreas into the duodenum.
← Didn't Know|Knew It →
What is the purpose of microvilli in the small intestine?
What is the purpose of microvilli in the small intestine?
Tap to reveal answer
Microvilli are found at the microscopic level within the digestive tract to help increase surface area. The increased surface area aids in the absorption of nutrients as they pass through the small intestine. Microvilli allow for folds in the digestive tract, which in turn, increase the amount of area available for nutrient absorption.
Microvilli are found at the microscopic level within the digestive tract to help increase surface area. The increased surface area aids in the absorption of nutrients as they pass through the small intestine. Microvilli allow for folds in the digestive tract, which in turn, increase the amount of area available for nutrient absorption.
← Didn't Know|Knew It →
Why are villi found in the small intestine, but not in the stomach?
Why are villi found in the small intestine, but not in the stomach?
Tap to reveal answer
The villi are helpful in increasing the surface area of the small intestine. This greatly increases the absorptive capabilities of the small intestine. The stomach has no villi, and does not contribute to absorption of macromolecules.
The villi are helpful in increasing the surface area of the small intestine. This greatly increases the absorptive capabilities of the small intestine. The stomach has no villi, and does not contribute to absorption of macromolecules.
← Didn't Know|Knew It →
Which of the following segments of the digestive system has the primary job of digesting food?
Which of the following segments of the digestive system has the primary job of digesting food?
Tap to reveal answer
The duodenum, in the small intestine, is a site of protein, carbohydrate, and fat digestion.
The jejunum is a site of protein and fat absorption. The ileum is a site of salt, vitamin, and excess molecule absorbtion. The colon is a segment of the large intestine for water and ion absortion. Each of these work to absorb different molecules, but do not significantly contribute to their digestion.
The duodenum, in the small intestine, is a site of protein, carbohydrate, and fat digestion.
The jejunum is a site of protein and fat absorption. The ileum is a site of salt, vitamin, and excess molecule absorbtion. The colon is a segment of the large intestine for water and ion absortion. Each of these work to absorb different molecules, but do not significantly contribute to their digestion.
← Didn't Know|Knew It →
Jim's body is able to produce bile salts, but unable to store it in large quantities. As a result, he cannot eat too much fat at once or it can be harmful to his digestive system. The pancreas and large intestine are not involved in bile storage.
Which of the following organs is Jim missing?
Jim's body is able to produce bile salts, but unable to store it in large quantities. As a result, he cannot eat too much fat at once or it can be harmful to his digestive system. The pancreas and large intestine are not involved in bile storage.
Which of the following organs is Jim missing?
Tap to reveal answer
The role of the gall bladder is to store bile salts, but it does not produce them. Rather, bile salts are produced by the liver and transported to the gall bladder for storage.
The role of the gall bladder is to store bile salts, but it does not produce them. Rather, bile salts are produced by the liver and transported to the gall bladder for storage.
← Didn't Know|Knew It →
Nutrient-rich blood moves from the small intestine to the liver via which of the following structures?
Nutrient-rich blood moves from the small intestine to the liver via which of the following structures?
Tap to reveal answer
The hepatic portal system involves the capillaries of the small intestine and capillaries of the liver. A portal system refers to two different capillary beds, connected by arterioles, that both receive blood before it returns to the heart for reoxygenation. The prefix "hepa-" refers to the liver.
The pancreatic duct transfers digestive enzymes from the pancreas into the lumen of the small intestine. Lacteal vessels receive fats from the small intestine and carry them into the lymphatic system. The pulmonary circuit refers to the region of the circulatory system that carries blood from the right ventricle to the lungs, and back to the left atrium.
The hepatic portal system involves the capillaries of the small intestine and capillaries of the liver. A portal system refers to two different capillary beds, connected by arterioles, that both receive blood before it returns to the heart for reoxygenation. The prefix "hepa-" refers to the liver.
The pancreatic duct transfers digestive enzymes from the pancreas into the lumen of the small intestine. Lacteal vessels receive fats from the small intestine and carry them into the lymphatic system. The pulmonary circuit refers to the region of the circulatory system that carries blood from the right ventricle to the lungs, and back to the left atrium.
← Didn't Know|Knew It →