The soul isn’t manifest by ultrasound. Ultrasound imaging focuses on the physical, not the soul.
Christianity is trichotomous. Even Platonic atheistic understanding of anthropology grasped the dichotomous nature of fallen man. Too many modern academics ignore everything other than the physical, thinking both soul and spirit are merely confused unskilled misunderstanding of physical phenomenon as empiricists stumbled into several centuries ago.
Even physical definitions of life for mature adults are measurables found in the third trimester, and some neurological functions are operational in the second trimester, but the soul, which is separable from the body, is also associated with the life breathed into the body as an image of God.
A stillbirth is also an example of a physical baby, not having received the soul, not a killing or murder.
The concepts have meanings and they are interconnected for a meaningful understanding of life as given to us by God Himself.
Aren’t you the clever one...
I know right from wrong ... I have carried many young ones to the pathology lab ... I know Gods handiwork when I see it... Please stop wasting your time trying to convince me white is black and up is down.