| Streeter, George | <person> U.S. Embryologist, 1873-1948. See: Streeter's bands, Streeter's developmental horizon(s). (05 Mar 2000) |
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| Streeter's bands | The strands of amniotic tissue adherent to the embryo or foetus; they may cause constriction of embryonic limbs. See: congenital amputation. Synonym: amniotic adhesions, annular band, constriction ring, Simonart's bands, Simonart's ligaments, Simonart's threads, Streeter's bands. (05 Mar 2000) |
| Streeter's developmental horizon | A term borrowed from geology and archeology by Streeter to define 23 developmental stages in young human embryos, from fertilization through the first 2 months; each horizon spanned 2 to 3 days and emphasized specific anatomic characteristics, to avoid discrepancies in the determination of age and body dimensions. Origin: G.L. Streeter (05 Mar 2000) |