Mollusca Anatomy

5. the beginning of the digestive system. This includes the mouth, radula, salivary glands, and esophagus.
6. the membrane that surrounds the visceral mass. This is a layer of skin that protects the organs.
7. the end of the digestive system. This is where nutrients are absorbed by the intestines.
8. the second larval stage. This has the beginnings of a foot, shell, and mantle
9. the part of the digestive system in charge of breaking down food. This includes the stomach and digestive glands
12. this type of circulatory system is not efficient at transporting oxygen around the body.
14. the main part of the body of the mollusk. This includes most of the organs.
17. the layer of shell that is made of calcium carbonate
19. this includes the mouth, sensory structures like photoreceptors, and radula

1. the outer layer of a shell
2. the layer of shell that is continuously created by the mantle
3. the organs that remove metabolic waste from the body.
4. this is where the respiratory organs are located. This is also where waste products are emptied out of the body
10. the first larval stage. These have cilia to help them move around.
11. this is a type of respiratory organ. This is a modified set of gills.
13. this is secreted by the outer layer of the mantle. This hard layer protects the mollusk.
15. this type of circulatory system is where blood is kept in blood vessels throughout the body.
16. the bottom of the mollusk. This is mostly used to help the mollusk move around. This can contain tentacles
18. an organ that has rows of teeth and acts as a conveyor belt to get food into the digestive system