The verse says specifically “The life OF THE FLESH is in the blood...”
That which sustains the FLESH is the blood. That is also biologically true.
Now, is the “life of the flesh” the ONLY life that is within a human being?
I would think it would be the only "life" that the State would have an obligation to protect. I don't think the State has a right or a duty to protect the life of a disembodied spirit or a life that cannot be perceived as "flesh".
In order for the state to have a duty to protect life, it must first have a basis for determining that "life" is present.
From a strictly biological perspective I believe you can say that life begins at conception.
From a Biblical perspective it can be argued that there is no life if there is no blood.
But at some point the State must make the determination of when life begins and once that determination is made, the state would be obligated to use its power to protect that life, even at the expense of the liberty of others.
What died when Adam sinned?
I'll say his spiritual life if one agrees that when a man is whole he is body, soul, and spirit.
Since God had to put his spirit upon certain men in the OT there is the implication that since Adam man has been born only body and soul with John the Baptist being the single exception, being filled with holy spirit from his mother's womb.
Natural man of body and soul is absent God's spirit. That spirit cannot be given by man nor can it be taken or regulated by man.
So in reality, I don't think the question is really relevant.
Do I need to repeat that I don't think abortions should happen?