human nutrition

2. An enzyme secreted by the pancreas that digests emulsified fats.
7. An enzyme present in saliva that breaks down starch.
9. A protein-digesting enzyme secreted in the stomach.
11. The longest part of the alimentary canal where complete digestion occurs.
12. An organ that secretes pancreatic juice and digestive enzymes.
13. A product formed when fats are completely digested, along with fatty acids.
16. A gland that secretes hydrochloric acid, pepsin and mucus to aid digestion in the stomach.
17. A muscular organ that mixes food with saliva during chewing.
18. A large organ where food is mixed with digestive juices and protein digestion begins.

1. A digestive juice secreted by the liver that helps in the digestion of fats.
3. A muscular structure that regulates the release of food from the stomach into the small intestine.
4. A substance secreted by the stomach lining that protects it from hydrochloric acid.
5. Finger-like projections in the small intestine that increase the surface area for absorption.
6. A fluid secreted by the salivary glands that moistens food and contains salivary amylase.
8. An organ that produces bile juice.
10. Rhythmic movements of the muscles of the alimentary canal that push food forward.
14. Biological catalysts that help break complex food molecules into simpler substances.
15. The food pipe connecting the mouth to the stomach.
17. An enzyme secreted by the pancreas that digests proteins.