COMPARATIVE STUDY BETWEEN THE FIBER-TYPE COMPOSITION IN THE FLEXOR AND EXTENSOR MUSCLES IN THE PIG (Sus scrofa)
SUMMARY: A description is provided of the different fiber-type composition of two flexors and two extensor muscles of the pig. In addition, cross-section areas of each fiber type and an estimation of the relative myonuclei by the muscle fibers in the tested muscles are also provided. Four muscles were selected for study, based in their suitability for future neurophysiological analysis as components of segmental motor system, and on their homologies with muscles in other vertebrates. The tested muscles were soleus, flexor digitorum superficialis (FDS), extensor digitorum longus (EDL) and extensor halux longus (EDHL). Serial sections of these muscles were stained for NADH-diaphorase and Haematoxilin and Eosin (HE). The relationships between the present results and previous findings on homologous muscles of the mammalian hindlimb are discussed.
| Principais autores: | , , , , |
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| Formato: | Digital revista |
| Idioma: | English |
| Publicado em: |
Sociedad Chilena de Anatomía
1999
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| Acesso em linha: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-98681999000100008 |
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| Resumo: | SUMMARY: A description is provided of the different fiber-type composition of two flexors and two extensor muscles of the pig. In addition, cross-section areas of each fiber type and an estimation of the relative myonuclei by the muscle fibers in the tested muscles are also provided. Four muscles were selected for study, based in their suitability for future neurophysiological analysis as components of segmental motor system, and on their homologies with muscles in other vertebrates. The tested muscles were soleus, flexor digitorum superficialis (FDS), extensor digitorum longus (EDL) and extensor halux longus (EDHL). Serial sections of these muscles were stained for NADH-diaphorase and Haematoxilin and Eosin (HE). The relationships between the present results and previous findings on homologous muscles of the mammalian hindlimb are discussed. |
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