Well, there's a point that I'd like to throw up in the air to get us started.
In the first term, there is no brain activity coming from the unborn. In modern society when someone is brain dead, they are officially declared as "dead", because there's nothing to keep them living on their own (they usually get hooked up to a machine if at a hospital during the time of brain death) and so if they are a donar, we will kill them and give their organs to save lives! So when there's no brain activity coming from the unborn, they are not consciously alive, and are (in a sense) "brain dead" in the sense that they do not yet have those capabilities.
So what I'm wondering is why shouldn't a mother have the right to abort the child in first term? And I'm sure there are plenty of great things that we could do with the unborn, just like we do with organ donars that are "brain dead".