Hawaii Massage License Practice Exam

Where does the primary digestion of food occur?

1. Stomach

2. Colon

3. Small intestine

4. Duodenum

The correct answer is: Small intestine

The primary digestion of food takes place in the small intestine, which is crucial for breaking down nutrients that the body can absorb and use. This process begins in the duodenum, the first section of the small intestine, where digestive juices from the pancreas and bile from the liver further assist in the digestion of food following its initial breakdown in the stomach. However, the entire small intestine, which includes the duodenum, jejunum, and ileum, plays a significant role in the digestion and absorption of carbohydrates, proteins, and fats. The small intestine's lining is equipped with villi and microvilli, which greatly increase its surface area and facilitate the absorption of digested nutrients into the bloodstream. This absorption process is vital for providing the body with essential nutrients. Thus, while the duodenum is essential for initial digestion, the term "primary digestion" more accurately encompasses the overall functions of the small intestine in this process.