The Human Body

1. an organ that is part of the digestive system but does not directly process food is called a __________ organ
3. the uniform mixing of particles between two substances (even if divided)
4. prevents backflow in the circulatory system
5. chemically breaks down food by breaking bonds in protein chains and complex carbohydrates
6. begins the chemical breakdown of protein (in the stomach)
8. the smallest branch of blood vessels
10. the blood vessel that takes blood away from the heart
11. concentration of a substance is greater in a cell than outside

1. the movement of particles between two substances against the natural tendency
2. the exchange of O2 and CO2 between the circulatory and respiratory system occurs here
4. the 2 blood vessels that bring blood to the heart
7. concentration of a substance is equal inside and outside a cell
9. regulates the flow of food/waste between parts of the digestive system
11. concentration of a substance is greater oustide a cell than inside