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Structural characteristicsof musculus sphincterani externus dissectedfrom people ofdifferent ages
- Issue: Vol 18, No 1 (2010)
- Pages: 18-24
- Section: Articles
- URL: https://journals.eco-vector.com/pavlovj/article/view/5221
- DOI: https://doi.org/10.17816/PAVLOVJ2010118-24
- ID: 5221
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Abstract
The aim of our study was to investigate the structure, microtopography and quantitative
characteristics of musculus sphincter ani externus dissected from people of different ages. It was shown
that different parts of musculus sphincter ani externus (subcutaneous, superficial and profound) are
characterized by significant morphological differences, particularly associated with the number and
size of muscular fascicles separated by thin interlayers of connective tissue. The greatest number of
muscular fascicles was found in the subcutaneous part of the sphincter and the lowest number of
muscular fascicles was observed in the superficial part of the muscle. We also found that in elderly
population this muscle is characterized by the thin muscular fascicles separated by the wide interlayers
of connective tissue. According to our data the greatest cross sectional area of muscular fascicles
(478 ± 63 μm2) was observed in adolescents and the lowest cross sectional area of muscular fascicles
(216 ± 40 μm2) was found in elderly people
characteristics of musculus sphincter ani externus dissected from people of different ages. It was shown
that different parts of musculus sphincter ani externus (subcutaneous, superficial and profound) are
characterized by significant morphological differences, particularly associated with the number and
size of muscular fascicles separated by thin interlayers of connective tissue. The greatest number of
muscular fascicles was found in the subcutaneous part of the sphincter and the lowest number of
muscular fascicles was observed in the superficial part of the muscle. We also found that in elderly
population this muscle is characterized by the thin muscular fascicles separated by the wide interlayers
of connective tissue. According to our data the greatest cross sectional area of muscular fascicles
(478 ± 63 μm2) was observed in adolescents and the lowest cross sectional area of muscular fascicles
(216 ± 40 μm2) was found in elderly people
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References
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