Oh come on, any medical text will confirm that the womb has it's own nervous system and blood supply and a good text will tell you that the system will function correctly in even completely paralyzed women. Just how do you think that works? And any text will SCREAM at you to keep a constant eye on the woman giving birth: if they stop breathing IT WILL NOT stop the birth, rather it will cause severe symptoms afterwards. A gynaecologist is not telling women to breathe to calm them down.

The blood supply and nerves are weird special cases in a great many ways. For instance, they're not left-right symmetric (whereas the ones of "nearby" systems, like the bladder, are. So this was not done because there's only one womb)

>a good text will tell you that the system will function correctly in even completely paralyzed women. Just how do you think that works?

the body has a lot of messaging systems; 'completely paralyzed' people still enjoy the use of many chemical messaging signals; they just generally have a hindered spinal cord or neurological interface element.

A paralyzed person will still go into shock after a dismemberment, blood-flow will be affected by vaso-constriction, and so on. It doesn't surprise me to hear that childbirth can trigger a similar set of conditions to occur.

And that belittles the existence of the underlying support nervous system and the secondary elements. Many completely paralyzed men can achieve erection and ejaculation even with a near total disconnect from the rest of the nervous system. Why? The parasympathetic nervous system and secondary nervous materials in the region in question are taking up the slack from the brain and still allowing 'normal' function.