Human Body

4. Vessels which bring blood to the heart and have valves for one way flow
5. A condition where there is an equal amount of water both inside and outside the cell
8. Movement against the concentration gradient which requires energy
11. Small sacks in the lungs which increase its surface area and are the place where the oxygen diffuses into the blood
12. Vocal chords
13. Valve which separates the left atrium from the left ventricle
14. Small branches which surround cells and are the place where oxygen and glucose diffuses into the cell

1. Branches which bring oxygen to the inner parts of the lungs
2. A pushing motion which helps the digestive system move food throughout organs such as the esophagus
3. Tubes from accessory organs which flow into the duodenum
6. The enzyme which begins protein digestion breaking polysaccharides into disaccharides
7. Windpipe that oxygen travels through to help get to the lungs
9. Muscle in the heart which makes it contract and release pumping the blood
10. Folds inside the small intestine which increase surface area allowing the nutrients to diffuse into the blood stream