[aruanan]

There is a time during the earliest age of an individual’s lifetime when just having a central processor working the nerve feedback loop is not sufficient to define the organism as alive in the air world because until approximately 20 to 22 weeks following the beginning of the individual’s lifetime, the organs called lungs are not complete enough to sustain respiration, even with the central processor working perfectly.

This, of course, is nonsense on its face since it's making "alive" depend on "alive means being able to breath air". There is no such definition that is not merely ad hoc for argument's sake.

Here is something that puts it all into the perspective you apparently wanted in many fewer words:

Genetically speaking, there is a time before which an individual of a sexually reproducing species does not exist and after which it does, be it ever so humble. From that moment to the moment of its dissolution it passes through definable stages of development and degeneration. Here are some that apply to us: zygote, embryo, fetus, newborn, infant, toddler, child, pre-adolescent, young adult, mature adult, old-aged. Upon this continuum of development place an asterisk where “it” becomes “human” and perhaps another where its humanity ceases as far as the empirical world is concerned. Many would place the asterisks at conception and death (death defined as the irreversible disruption of the continuum). I do. For us, it is this creature appearing at conception and disappearing at death that is human. Against this, talk about seeds not being trees and fertilized eggs not being chickens shows itself for the silly ontogenocentrism that it is-- the full-grown chicken is not a fertilized egg, but both are developmental stages of the same being. An acorn is not a tree, but both are equally oak.

If “human being” is a later stage of an individual’s existence, then what is the name for the being started at conception and ended at death? On the individual level, the pro-life group calls it human whether conscious or not, crippled, retarded, senile, diseased, sinful, intelligent, female, or male. The pro-abortion group uses “quality of life and “value to society” to define the parameters of being human and those who have the power to do so to define those terms, whether a woman and her physician, N.A.R.A.L, or Big Brother.

[MHGinTN]

I guess I'm just not capable of writing that succinctly. ... And I wanted to focus upon the essentials of the protocol used when organ harvesting is anticipated with older human beings, to determine when there is no longer an integrated whole functioning human organism 'there' or here, or ... well, see, I just can't be so succinct, aruanan. [My 'hidden agenda' is to define the reason, biologically, for protecting individual human embryonic life from exploitative measures.]