1. a. List the defense mechanisms that reduce the risk of infection in the oral cavity. b. State the locations of resident (normal) flora in the digestive tract. c. State the approximate pH of...

1. a. List the defense mechanisms that reduce the risk of infection in the oral cavity.

b. State the locations of resident (normal) flora in the digestive tract. c. State the approximate pH of gastric secretions and two purposes served by this pH level.

2. a. Explain how the liver responds to high blood glucose levels.

b. Describe six functions of the liver (include a variety of functions).

3. a. For each of the major groups of nutrients, state the primary site of absorption and the form in which the substance is absorbed.

b. What is the major site of absorption of water and electrolytes?

c.Which substances are absorbed primarily by active transport and which are absorbed by osmosis?

d. Explain why tissue damage hinders active transport.