Summary
The attachments, course, and interrelationships of M. genioglossus were examined in 28 fifteen-week human fetal specimens. Observations were made from histologic sections of the tongue cut in one of the three standard planes of section.
The anterior-most genioglossal fibers insert near the tip of the tongue at the level of the anterior extent of the median septum. Within the central mass of the tongue, some fibers of this muscle characteristically decussate across midline, a limited number below the level of the septum and a considerably larger number above it. Posteriorly, a few of the most posterior and inferior fibers of M. genioglossus could be traced to an attachment on the thickened perichondrium on the superior edge of the hyoid anlage. In other respects, the disposition of genioglossal fibers at this stage of development resembles closely that description generally given for the adult structure.
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References
Abd-El-Malek, S.: Observations on the morphology of the human tongue. J. Anat. (Lond.) 73, 201–210 (1939)
Barnwell, Y., Langdon, H.L., Klueber, K.M.: The morphology of the intrinsic longitudinal musculature of the tongue in the 15-week human fetus. Part I, m. longitudinalis superior. (in press, Int. J. Oral Myol., 1978a)
Barnwell, Y., Klueber, K.M., Langdon, H.L.: The morphology of the intrinsic longitudinal musculature of the tongue in the 15-week human fetus. Part II, m. longitudinalis inferior. (in press, Int. J. Oral. Myol., 1978b)
Blandin, M.F.: Memoire sur la structure et les mouvements de la langue en l'homme. Arch. gen. Med. 1, 457–470 (1823)
Cruveilhier, J.: The anatomy of the human body (Tr. G. Pattison): 3rd Edn. New York: Harper 1844
Doran, G.A., Baggett, H.: The genioglossus muscle; a reassessment of its anatomy in some mammals, including man. Acta anat. (Basel) 83, 403–410 (1972)
Hesse, Fr.: Ueber die Muskeln der menschlichen Zunge. Anat. Entwickl. Gesch. 1, 80–106 (1875)
Jonnesco, T.: Tube digestif. In: Traite d'anatomie humaine (P. Poirier and A. Charpy, eds.). Vol. 4. Paris: Masson et Cie 1912
Miyawaki, K.: A study on the musculature of the human tongue. Bull. Res. Inst. Logoped. Phon. (Tokyo) 8, 23–50 (1974)
Oikawa, R.: Studies on the disposition and distribution of the tongue muscle in the human fetus. Shikwa Gakuho 73, 485–527, 1973, in Oral Res. Abstr., 11, 808 (1976)
Pons-Tortella, E.: Zur Entwicklung der Form und der Muskulatur der Zunge beim Menschen. Anat. Entwickl. Gesch., 105, 72–78 (1936)
Salter, H.H.: Tongue. In: Todd cyclopedia of anatomy and physiology, Vol. 4. London: Longman, Brown, Green, and Longman 1852
Scott, J.H.: Dento-facial development and growth. Oxford: Pergamon 1967
Streeter, G.L.: Weight, sitting height, head size, foot length and menstrual age of the human embryo. Contr. Embryol. Carneg. Instn. 11, 146–160 (1920)
Strong, L.H.: Muscle fibers of the tongue functional in consonant production. Anat. Rec. 126, 61–79 (1956)
Testut, L.: Sens du gout. In: Traite d'anatomie humaine. Paris: Doin et Fils 1911
Zaglas, J.: On the muscular structure of the tongue of man and of certain of the mammalia. Ann. Anat. Physiol. 1, 1–21 (1850)
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This research has been supported principally by the U.S.P.H.S. Grant DE-1697, National Institute of Dental Research, and in part by Health Research and Services Foundation Grant 0-85
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Langdon, H., Klueber, K. & Barnwell, Y. The anatomy of M. genioglossus in the 15-week human fetus. Anat Embryol 155, 107–113 (1979). https://doi.org/10.1007/BF00315735
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DOI: https://doi.org/10.1007/BF00315735