Treadigraph,
When you format the text with your Heading Style, everything you select will show in the ToC. The following is what I think you want.
Select the text at the beginning of the sentence you want for the TOC.
Apply Heading Style.
Now, to make the formatted text appear normal, (so it doesn't look out of place with the rest of the text) format as required. So, if Heading 2 is Cambria (Heading), Blue, Bold, 13, select that formatted text, and make it Arial 12 normal (if that is what you want your text to be seen as).
Now insert TOC, and you will see just the words you selected, so you will need to re-format if you want them funky.
Does that make sense?