Background: The jejunum is the second part of the small intestine, where most nutrients are absorbed into the blood. As shown in Figure below , the mucous membrane lining the jejunum is covered with millions of microscopic, fingerlike projections called villi (singular, villus). Villi contain many capillaries, and nutrients pass from the villi into the bloodstream through the capillaries. Because there are so many villi, they greatly increase the surface area for absorption. In fact, they make the inner surface of the small intestine as large as a tennis court!

Situation: Paul and Dirk were studying the human digestive system. paul studied more about the stomach, while Dirk studied more about the jejunum.

Question: Which student read more about the second part of the small intestine?
Answer: Dirk

Situation: Paul and Dirk were studying the human digestive system. paul studied more about the stomach, while Dirk studied more about the jejunum.

Question: Which student read less about the second part of the small intestine?
Answer: Paul

Situation: Paul and Dirk were studying the human digestive system. paul studied more about the stomach, while Dirk studied more about the jejunum.

Question: Which student read less about the part where most nutrients are absorbed into the blood?
Answer: Paul

Situation: Paul and Dirk were studying the human digestive system. paul studied more about the stomach, while Dirk studied more about the jejunum.

Question: Which student read more about the part where most nutrients are absorbed into the blood?
Answer: Dirk

Situation: Paul and Dirk were studying the human digestive system. paul studied more about the stomach, while Dirk studied more about the jejunum.

Question: Which student read more about villi?
Answer: Dirk

Situation: Paul and Dirk were studying the human digestive system. paul studied more about the stomach, while Dirk studied more about the jejunum.

Question: Which student read less about villi?
Answer: Paul

Situation: Paul and Dirk were studying the human digestive system. paul studied more about the stomach, while Dirk studied more about the jejunum.

Question: Which student read less about villi containing many capillaries?
Answer: Paul

Situation: Paul and Dirk were studying the human digestive system. paul studied more about the stomach, while Dirk studied more about the jejunum.

Question: Which student read more about villi containing many capillaries?
Answer: Dirk

Situation: Paul and Dirk were studying the human digestive system. paul studied more about the stomach, while Dirk studied more about the jejunum.

Question: Which student read more about millions of microscopic, fingerlike projections?
Answer: Dirk

Situation: Paul and Dirk were studying the human digestive system. paul studied more about the stomach, while Dirk studied more about the jejunum.

Question: Which student read less about millions of microscopic, fingerlike projections?
Answer: Paul

Situation: Pete liked the human physiology so he started reading about the digestive system, especially about the jejunum. His colleague Fox, studied more about the stomach.

Question: Which student read more about the second part of the small intestine?
Answer: Pete

Situation: Pete liked the human physiology so he started reading about the digestive system, especially about the jejunum. His colleague Fox, studied more about the stomach.

Question: Which student read less about the second part of the small intestine?
Answer: Fox

Situation: Pete liked the human physiology so he started reading about the digestive system, especially about the jejunum. His colleague Fox, studied more about the stomach.

Question: Which student read less about where most nutrients are absorbed into the blood?
Answer: Fox

Situation: Pete liked the human physiology so he started reading about the digestive system, especially about the jejunum. His colleague Fox, studied more about the stomach.

Question: Which student read more about where most nutrients are absorbed into the blood?
Answer: Pete

Situation: Pete liked the human physiology so he started reading about the digestive system, especially about the jejunum. His colleague Fox, studied more about the stomach.

Question: Which student read more about the mucous membrane lining the jejunum?
Answer: Pete

Situation: Pete liked the human physiology so he started reading about the digestive system, especially about the jejunum. His colleague Fox, studied more about the stomach.

Question: Which student read less about the mucous membrane lining the jejunum?
Answer: Fox

Situation: Pete liked the human physiology so he started reading about the digestive system, especially about the jejunum. His colleague Fox, studied more about the stomach.

Question: Which student read less about the millions of microscopic, fingerlike projections called villi?
Answer: Fox

Situation: Pete liked the human physiology so he started reading about the digestive system, especially about the jejunum. His colleague Fox, studied more about the stomach.

Question: Which student read more about the millions of microscopic, fingerlike projections called villi?
Answer: Pete

Situation: Pete liked the human physiology so he started reading about the digestive system, especially about the jejunum. His colleague Fox, studied more about the stomach.

Question: Which student read more about how nutrients pass from the villi into the bloodstream through the capillaries?
Answer: Pete

Situation: Pete liked the human physiology so he started reading about the digestive system, especially about the jejunum. His colleague Fox, studied more about the stomach.

Question: Which student read less about how nutrients pass from the villi into the bloodstream through the capillaries?
Answer: Fox