Read advice in The Craft of Research and your Mayfield textbook about writing an outline. The heading title itself may very well explain the contents, but you will need to explain the purpose. Women's Wrists Tend to Suffer Greater Strain than Men's .
Square wrists are weaker than rectangular wrists.
Small wrists are weaker than large wrists. Data on the average size of male and female wrists. This section will explain and illustrate how the structural features of women's wrists tend to leave them more prone to carpel tunnel disease. I realize that your outline may change a bit as you draft your paper, but you should try to present your paper's structure as best as you can at this point in your writing process. Reread the chapter in the Mayfield textbook about graphics, since this will remind you that you have a wide variety of options for choosing visual aids to include in your paper.