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27. The structure where osteoclasts attach to dissolve bone is known as:

6. How does the skeleton contribute to movement?

31. Which of the following best describes white matter?  

16. What type of tissue composes the dura mater?  

10. Found in the urinary bladder, _________blank resembles _________blank, but the apical cells are rounded, not flattened.

21. Both the nucleus and the mitochondrion are surrounded by a two-layer membrane.

36. Which of the following does not affect the rate of diffusion?

30. Some simple columnar and pseudostratified columnar epithelia have _________blank cells, which produce a protective mucous coating over the mucous membranes.

12. Which of the following is not a feature of epithelia?

9.  A crystal of calcium phosphate in the cytoplasm of a cell should be classified as an inclusion.