Which of the following regions of the digestive tube is associated with the function of "mechanical" digestion?  1.  mouth 2.  esophagus 3.  stomach 4.  liver 5.  large intestine (colon) Choose from the following: (A) 1 and 2 (B) 1, 2, and 3 (C) 2 and 3 (D) 1 and 3 (E) 2 and 4 (F) 3 and 4 (G) 3, 4, and 5

Select ALL statements about digestive systems that are true: A. carnivores have longer digestive tracts than herbivores B. gizzards grind food with little rocks C. the front part of our mouths where we chew food is called the pharynx D. An alimentary canal is the same thing as a gastrointestinal tract E. The gastro-intestinal lumen is anaerobic.

The stomach ...  (A) contains goblet cells that prouce mucus  (B) contains parietal cells to maintainin a high pH (C)contains chief cells that directly secrete pepsin(D) may develop an ulcer sue to H pylori

1. Which part of the system is where most of the nutrients are absorbed? 2. What are the two main fluids used to transport nutrients and other materials throughout the body? 3. Which fluid transports water soluble substances, such as carbohydrates and proteins? 4. Which fluid transports fats/fat soluble substances after absorption from the digestive system?5. Name two mechanical actions that are at work in the digestive system? 5. What are some chemical actions that take place during digestion?