Abstract
The aim was to study papillary muscles of the right ventricular septomarginal trabecula. Materials and methods: 98 formalinfixed normal hearts from human fetuses aged 17 to 28 weeks were studied by means stereomicroscope. Results. Muscles in such position were found to be in 55.1%. The free-standing papillary muscles predominated over the muscles of fixe type. The muscles had monolithic base, one belly and mostly one apex. Tendinous chords of these muscles entered only the septal cusp of the right atrioventricular valve. A potential clinical importance of the papillary muscles was mentioned. Conclusion. The papillary muscles situated at the septomarginal trabecula are proposed to regard as particular subgroup of septal papillary muscles.
Highlights
Materials and methods: 98 formalinfixed normal hearts from human fetuses aged 17 to 28 weeks were studied by means stereomicroscope
Muscles in such position were found to be in 55.1%
The free-standing papillary muscles predominated over the muscles of fixe type
Summary
Цель: установить особенности анатомических характеристик сосочковых мышц, берущих начало от перегородочно-краевой трабекулы правого желудочка в нормальном сердце плода человека. Материалы и методы: на 98 фиксированных в формалине анатомических препаратах обычно сформированного сердца человека 17–28 недель гестации при помощи стереомикроскопа изучены сосочковые мышцы перегородочно-краевой трабекулы. Результаты: данные мышцы встречались на 55,1% препаратов и в большинстве случаев брали начало исключительно от тела перегородочно-краевой трабекулы. Вывод: предложено считать мышцы, начинающиеся от перегородочнокраевой трабекулы, особой подгруппой перегородочных сосочковых мышц правого желудочка сердца. Анатомическое исследование сосочковых мышц перегородочно-краевой трабекулы в плодном периоде развития человека. The aim was to study papillary muscles of the right ventricular septomarginal trabecula. The muscles had monolithic base, one belly and mostly one apex. Tendinous chords of these muscles entered only the septal cusp of the right atrioventricular valve. The papillary muscles situated at the septomarginal trabecula are proposed to regard as particular subgroup of septal papillary muscles
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