Hardcore anti abortion types would in effect, if they ever get their way, place the right of the zygote, embryo, fetus to maintain its life functions by attaching to and using the womans body above that of the woman to not have her body used against her will.
In what other case would this be done. Could someone waiting for a kidney transplant, heart transplant, with a good match to you, force an physical attachment to your body to sustain their life until they had the ability to survive on their own? Could you be co opted against your will to give blood or tissue to sustain anothers life?
Why should the "right to life" of a zygote, embryo or fetus be any more evident than the right of any post born person in need of some of your tissue or body parts?
It seems to me that to advoid placing the burden of "right to life" only on one gender and then only on those who can become pregnant that there must be a "right to life" for all and that the entire population be responsible for physically making it possible.