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MeSH Review

Tensor Tympani

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High impact information on Tensor Tympani

  • With high-power light microscopy, putative axo-somatic and axo-dendritic contacts were observed between serotonin-positive endings and both stapedial and tensor tympani motoneurons, indicating that serotonin neurons terminate on brainstem motoneurons innervating the middle-ear muscles [1].
  • Do the tensor tympani and tensor veli palatini muscles of man form a functional unit? A histochemical investigation of their putative connections [2].
  • Neonatal myosin in bovine and pig tensor tympani muscle fibres [3].
  • Moreover, as no multiple end-plate innervation, thought to be typical of slow-tonic fibres, could be demonstrated in this muscle by acetylcholinesterase staining or by Ruffini gold impregnation, it is suggested that in tensor tympani the slow-tonic fibres are focally innervated [4].
  • This overpressure is equalized downwards to match the ambiant pressure, by the synergic activity of the tensor tympani and the fibro-cartilaginous Eustachian Tube [5].

Anatomical context of Tensor Tympani


Gene context of Tensor Tympani

  • It is suggested that both tensor palati and tensor tympani are functionally tubal muscles and might, perhaps, be termed "extrinsic muscles of the ear". Together they largely control tubal opening [8].


  1. Serotoninergic innervation of stapedial and tensor tympani motoneurons. Thompson, A.M., Thompson, G.C., Britton, B.H. Brain Res. (1998) [Pubmed]
  2. Do the tensor tympani and tensor veli palatini muscles of man form a functional unit? A histochemical investigation of their putative connections. Kierner, A.C., Mayer, R., v Kirschhofer, K. Hear. Res. (2002) [Pubmed]
  3. Neonatal myosin in bovine and pig tensor tympani muscle fibres. Scapolo, P.A., Rowlerson, A., Mascarello, F., Veggetti, A. J. Anat. (1991) [Pubmed]
  4. The tensor tympani muscle of cat and dog contains IIM and slow-tonic fibres: an unusual combination of fibre types. Mascarello, F., Carpenè, E., Veggetti, A., Rowlerson, A., Jenny, E. J. Muscle Res. Cell. Motil. (1982) [Pubmed]
  5. Controversy about the eustachian tube function. Marquet, J. Acta oto-rhino-laryngologica belgica. (1989) [Pubmed]
  6. The tensor tympani, stapedius, and tensor veli palatini muscles--an electromyographic study. Kamerer, D.B., Rood, S.R. Otolaryngology. (1978) [Pubmed]
  7. Histochemical characteristics of the tensor tympani muscle in relation to the medial gastrocnemius muscle of the cat. Haugsten, P., Dahl, H.A., Teig, E. Acta Otolaryngol. (1984) [Pubmed]
  8. Eustachian tubal function: changes throughout childhood and neuro-muscular control. Holborow, C. The Journal of laryngology and otology. (1975) [Pubmed]
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