Unit 2 Crossword

3. Part of the circulatory system, starts with an H.
6. Part of the muscular system, starts with a C.
7. System that takes in oxygen and removes carbon dioxide and water.
10. The 3rd most complex segment in the levels of organization.
11. System that regulates body activities using hormones.
12. System that takes in food.
13. Part of the reproductive system, starts with an O.
14. Part of the integumentary system, has 4 letters in it.
15. Part of the skeletal system, starts with a B.
17. System that allows organisms to reproduce which prevents their species from being extinct.
18. The most complex segment in the levels of organization.
21. System that barriers against infection.
22. Part of the digestive system, starts with an M.
24. Part of the immune system, has 3 words in it.
26. System that protects organs.
28. The least complex segment in the levels of organization.
29. System that removes waste products from cellular metabolism.
30. System that gathers and interprets information.

1. System that stores WBC's that fight disease.
2. The 2nd most complex segment in the levels of organization.
4. Part of the respiratory system, starts with an N.
5. System that transports materials to and from cells.
8. Part of the nervous system, starts with a B.
9. System that allows for movement by contracting.
16. Part of the excretory system, starts with a K.
19. System that fights off foreign invaders in the body.
20. Part of the lymphatic system, starts with an L.
23. Part of the endocrine system, starts with a G.
25. Theory that states that all living things are made of cells, all cells come from pre-existing cells, and cells are the basic unit of life.
27. The 4th most complex segment in the levels of organization.