Exam 3: Digestion, Absorption, and Transport

The hepatic portal vein collects blood from the GI tract and conducts it to the ____.

Which principal enzyme of secretion begins carbohydrate digestion?

The semiliquid mass of partly digested food expelled by the stomach into the duodenum is called "________."

Compare and contrast prebiotics and probiotics. Give examples of each type.

The wavelike muscular contractions of the GI tract that push its contents along are called "________."

Into what region of the intestinal tract does the stomach empty its contents?

Which vehicle provides the passageway from the lymphatic system to the vascular system?

Living microorganisms found in foods and dietary supplements that, when consumed in sufficient quantities, are beneficial to health are called "________."

Briefly describe the lymphatic system, including how it differs from the vascular system.

Which organ in the GI tract houses bacteria and lymph cells?

________ are small vessels that connect arteries to veins.

What is the class of enzymes that help digest proteins?

Water and small lipids cross into the intestines freely; therefore, they are absorbed by ________.

The pyloric sphincter opens into the ________.

How do intestinal cells facilitate nutrient absorption?

Which of the following would a dietitian recommend to enhance digestion and absorption?

Which organ stores bile until it is needed?

By the time the contents of the GI tract reach the ________, the three energy-yielding nutrients have been digested.

Which of the following statements about taste buds is FALSE?

How is blood routed through the digestive system?