Chapter 12, Problem 23RQ

How is vitamin B12 absorbed?

What is the role of the accessory organs in digestion?

Discuss why obesity is agrowing epidemic.

List two essential macronutrients and two essential micro nutrients.

By watching this animation (http://openstaxcollege.org/l/foodgroups) , you will see that for the various food groups—proteins, fats, and carbohydrates—digestion begins in different parts of the digestion system, though all end in the same place. Of the three major food classes (carbohydrates, fats, and proteins), which is digested in the mouth, the stomach, and the small intestine?

What role might environment have played in causing Frederick Williams problems, especially at a time when nutrition varied greatly from town to town and from family to family?