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<article article-type="review-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">emcardio</journal-id><journal-title-group><journal-title xml:lang="ru">Неотложная кардиология и кардиоваскулярные риски</journal-title><trans-title-group xml:lang="en"><trans-title>Emergency Cardiology and Cardiovascular Risks journal</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2616-633X</issn><publisher><publisher-name>Белорусский государственный медицинский университет</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">emcardio-223</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Обзоры и лекции</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Reviews and lectures</subject></subj-group></article-categories><title-group><article-title>Особенности строения клапанного аппарата сердца человека в раннем эмбриогенезе</article-title><trans-title-group xml:lang="en"><trans-title>Structural features of the valvular apparatus of the human heart in early embryogenesis</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ромбальская</surname><given-names>А. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Rombalskaya</surname><given-names>A. R.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>УО «Белорусский государственный медицинский университет»</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Belarusian State Medical University</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>11</day><month>11</month><year>2025</year></pub-date><volume>3</volume><issue>2</issue><elocation-id>760–764</elocation-id><permissions><copyright-statement>Copyright &amp;#x00A9; Ромбальская А.Р., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Ромбальская А.Р.</copyright-holder><copyright-holder xml:lang="en">Rombalskaya A.R.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://emcardio.bsmu.by/jour/article/view/223">https://emcardio.bsmu.by/jour/article/view/223</self-uri><abstract><p>В статье представлены данные об особенностях развития структур предсердно-желудочковых клапанов (сухожильных хорд, сосочковых мышц) человека в раннем эмбриогенезе, а также показано развитие мясистых трабекул, как структур, из которых формируются сосочковые мышцы. Приведены стадии развития этих структур. Установлено, что первыми в желудочках сердца эмбрионов 6 мм теменно-копчиковой длины (ТКД) визуализируются мясистые трабекулы в виде сетевидного сплетения, а отдельные из них, выпячиваясь в полость желудочка, образуют сосочковые мышцы. По мере увеличения размеров сердца эмбриона человека створки предсердно-желудочковых клапанов и сосочковые мышцы отдаляются друг от друга и между ними появляются тяжи с мышечным компонентом – будущие сухожильные хорды (у эмбрионов 18–19 мм ТКД). Постепенно мышечная ткань в сухожильных хордах и створках предсердно-желудочковых клапанов замещается соединительной тканью и внутрижелудочковые образования приближаются к дефинитивному строению (у эмбрионов 65–70 ТКД).</p></abstract><trans-abstract xml:lang="en"><p>The article presents the data on the structural features of the development of atrioventricular valves (tendon chords, papillary muscles) in early embryogenesis and shows the development of fleshy trabeculae as structures from which papillary muscles are formed. The stages of development of these structures are described. It has been found that fleshy trabeculae in the form of a reticular plexus are the first to be visualized the first in the ventricles of the heart of embryos of 6 mm parietal-coccygeal length (TCD), and some of them, protruding into the ventricular cavity, form papillary muscles. As the size of the human embryo heart increases, the leaflets of atrioventricular valves and papillary muscles move away from each other and strands with a muscular component appear between them – future tendon chords (in embryos 18–19 mm TCD). Gradually, the muscle tissue in the tendon chords and atrioventricular valves is replaced by connective tissue and intraventricular formations approach the definitive structure (in embryos 65–70 TCD).</p></trans-abstract><kwd-group xml:lang="ru"><kwd>эмбриогенез</kwd><kwd>человек</kwd><kwd>сердце</kwd><kwd>клапанный аппарат</kwd></kwd-group><kwd-group xml:lang="en"><kwd>embryogenesis</kwd><kwd>human</kwd><kwd>heart</kwd><kwd>valvular apparatus</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Berishvili I.I., Sabirov B.N., Vachromeeva M.N. Embriogenez predserdnozheludochkovych klapanov [Atrial Ventricular Valve Embryogenesis]. 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