Structural features of the valvular apparatus of the human heart in early embryogenesis
Abstract
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).
References
1. Berishvili I.I., Sabirov B.N., Vachromeeva M.N. Embriogenez predserdnozheludochkovych klapanov [Atrial Ventricular Valve Embryogenesis]. Morfologiya, 1996, vol. 109, no. 1, pp. 106–110. (in Russian).
2. Gabchenko A.K. Vazoidy trabekulyarnoy chasti gubchatogo miokarda embriona kak osnova formirovaniya sosudistoy sistemy serdza cheloveka [Vasoids of trabecular part of spongy myocardium of the embryo as the basis of vascular system formatum in the human heart]. Morfologiya, 2008, vol. 133, no. 2, pp. 28a. (in Russian).
3. Wenink A.C. Knaapen M.W., Vrolijk B.C., VanGroningen J.P. Development of myocardial fiber organization in the rat heart. Anat Embryol (Berl), 1996, vol. 193, no. 6, pp. 559–567.
4. Michaylov S.S. Klinicheskaya anatomiya serdza [Clinical anatomy of the heart]. M.: Medizina, 1987, 288 s. (in Russian).
5. Motalin S.B. Morfogenez struktur serdza i sosudov, opredelyayuschich dvizhenie krovi v nich v ontogeneze [Morphogenesis of the structures of the heart and blood vessels that determine the movement of blood in them in ontogenesis]. Kratkie tez. dokl. 70-y itog. nauch. sessii Astrachan. gos. med. in-ta. Astrachan’, 1989, pp. 46. (in Russian).
6. Bokeriya L.A., Berishvili I.I. Chirurgicheskaya anatomiya serdza: v 2 t. M.: NZSSCh im. A.N. Bakuleva R AMN, 20 06. Vol. 1: Normal’noe serdze i fiziologiya krovoobrascheniya [Normal heart and circulatory physiology], 365 s. (in Russian).
7. Grzybiak M. Number of the tendinous cords in the human left ventricle during fetal and postnatal period. Folia Morphol (Warz), 1986, vol. 45, no. 3, pp. 158–168.
8. Torrent-Guasp F., Buckberg G.D., Clemente C., Cox J.L., Coghlan H.C., Gharib M. The structure and function of the helical heart and its buttress wrapping. The normal macroscopic structure of the heart. Semin Thorac Cardiovasc Surg, 2001, vol. 13, no. 4, pp. 301–319.
Review
For citations:
Rombalskaya A.R. Structural features of the valvular apparatus of the human heart in early embryogenesis. Emergency Cardiology and Cardiovascular Risks journal. 2019;3(2):760–764. (In Russ.)
Views:
18
Email this article 