Week 13 - Cells and Systems: Disorders

3. Digestive System Disorders

Lesson 19

Science in Action 8
Pages 164

ScienceFocus 8
Pages 159

Lesson 19: Digestive System Disorders

The digestive system is responsible for converting the food you eat into a form useful to the cells in your body. This requires the breakdown of nutrients into their simplest form This will supply the body with energy or raw materials to be used for growth and tissue repair. Any disruptions in the digestive system will cause . Problems with cells all over the body

The process of digestion begins in the mouth, where the saliva begins the breakdown of carbohydrates. The next step is the stomach, where proteins are broken down. Ulcers are a common disorder of the stomach. Food materials then move to the intestine, where carbohydrates, proteins and lipids. To break down lipids (fats) bile from the gall bladder is needed. A disorder that can happen is known as gall stones and it interfere with the digestion of lipids. The next step is the last part of the large intestine, called the colon. Doctors feel that a lack of fibrin the diet may lead to colon cancer.

Exercise 5.3: Digestive System

Conclusion

As we have seen throughout this unit the human body and all it's systems are very complex.

-Werner van Braun

"While the admission of a design for the universe ultimately raises a question of a Designer (a subject outside of science), the scientific method does not allow us to exclude data which lead to the conclusion that the universe, life and man are based on design. To be forced to believe only one conclusion -- that every living thing in the universe happened by chance -- would violate the very objectivity of science itself. Certainly there are those who argue that the universe evolved out of a random process, but what random process could produce the brain of a man or the system of the human eye?"