Embryogenesis of the human tongue
Alekseev, O.N.
Arkhiv Anatomii Gistologii i Embriologii 100(6): 87-90
1991
ISSN/ISBN: 0004-1947 PMID: 1726874 Document Number: 377184
Developmental peculiarities of the tongue as a whole and its main structural elements (muscles, membranes, glands, lingual tonsil) have been studied in 120 human embryos and fetuses 5-week-old--9-month-old. Transmissive electron microscopy, electron histochemistry (for estimation of 5'-nucleotidase activity), staining of semithin slices with toluidine blue and aniline++ pink have been applied. Problems on migration of myogenic elements in the developing tongue have been discussed. Ultrastructure of gustatory bulbs of the human fetus tongues has been investigated. A complete formation of the tongue takes place by the 8th-9th months of the prenatal development.