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- Newsgroups: talk.abortion
- Path: sparky!uunet!gatech!taco!csl36h.csl.ncsu.edu!dsholtsi
- From: dsholtsi@csl36h.csl.ncsu.edu (Doug Holtsinger)
- Subject: Re: Pro-choicers must condone infanticide
- Message-ID: <1992Dec27.012931.15358@ncsu.edu>
- Sender: news@ncsu.edu (USENET News System)
- Reply-To: dsholtsi@csl36h.csl.ncsu.edu (Doug Holtsinger)
- Organization: North Carolina State University
- References: <1992Dec15.025342.12892@ncsu.edu> <BzF13M.9Cx@mentor.cc.purdue.edu> <nyikos.724977400@milo.math.scarolina.edu>
- Date: Sun, 27 Dec 1992 01:29:31 GMT
- Lines: 40
-
- In article <nyikos.724977400@milo.math.scarolina.edu>
- nyikos@math.scarolina.edu (Peter Nyikos) writes:
-
- > [... good stuff on human development regretfully deleted ...]
-
- I liked your references; mine aren't nearly as broad in scope.
- I thought you might be interested in the following quote; note
- the explicit comparisons between embryonic/fetal and postnatal
- movements.
-
- "Fetal behavior includes movements and behavioral states,
- which are sleep and ``wakefulness.'' They can be studied
- in the undisturbed intra-uterine environment. Movements
- can be discerned by ultrasound in the embryonic period,
- and throughout the fetal period. As is shown by electron
- microscopy, little neural structure is necessary to generate
- movements. The first movements are detected at 5 to 6 weeks
- and consist of extension or flexion of the neck and the
- thoracic region. More complex movements follow within
- a few days and form co-ordinated patterns that depend on
- the structural maturation of the nervous system. Early
- movements, however, require only a minimal synaptic density
- on the motor neurons. Embryonic movements resemble post-
- natal motor patterns and include startles, general movements,
- hiccups, isolated limb movements, and head rotation. Other
- features, such as breathing movements, yawning, sucking,
- and swallowing, begin later during trimester 1. All motor
- patterns appear to be present by the beginning of trimester 2.
- Reflex and spontaneous movements probably begin simultaneously.
- Fetal and postnatal movements are strikingly similar.
-
- Neural functions form a continuum from prenatal to
- postnatal life. Moreover, prenatal neural functions,
- far from being limited to a few primitive reflexes,
- ``are already complex mechanisms, based on endogenously
- generated and co-ordinated motor patterns'' (Prechtl)."
-
- _Human embryology and teratology_, Wiley-Liss, 1992,
- pg. 278--279.
-
-