1. Copyright © 2009 Pearson Education, Inc. Figure 16.1b The male reproductive system.

2. Copyright © 2009 Pearson Education, Inc. Figure 16.1b The male reproductive system.

3. Copyright © 2009 Pearson Education, Inc. Figure 16.1a The male reproductive system.

4. Copyright © 2009 Pearson Education, Inc. Figure 16.1a The male reproductive system.

5. Copyright © 2009 Pearson Education, Inc. Table 16.1 Summary of the male reproductive organs and glands

6. Copyright © 2009 Pearson Education, Inc. Figure 16.2b Sperm formation in a seminiferous tubule.

7. Copyright © 2009 Pearson Education, Inc. Figure 16.2c Sperm formation in a seminiferous tubule.

8. Copyright © 2009 Pearson Education, Inc. Figure 16.2d Sperm formation in a seminiferous tubule.

9. Copyright © 2009 Pearson Education, Inc. Figure 16.4b The female reproductive system.

10. Copyright © 2009 Pearson Education, Inc. Figure 16.4b The female reproductive system.

11. Copyright © 2009 Pearson Education, Inc. Figure 16.4a The female reproductive system.

12. Copyright © 2009 Pearson Education, Inc. Figure 16.4a The female reproductive system.

13. Copyright © 2009 Pearson Education, Inc. Figure 16.5b The female breast.

14. Copyright © 2009 Pearson Education, Inc. Figure 16.6 The ovarian cycle.

15. Copyright © 2009 Pearson Education, Inc. Figure 16.9 Colored SEM (  900) of sperm in contact with an egg.

16. Copyright © 2009 Pearson Education, Inc. Figure 16.15 Relative rates of infection for the three most common bacterial STDs.