Morphology and Morphometrical studies on Semi lunar Heart valves of Indigenous Cattle (&lt;i&gt;Bos indicus&lt;/i&gt;)

Akhtar, S.; Hossain, Ferdaus Mohd Altaf; Siddiqui, M. S. I.; Alam, Masud; Islam, Md. Nazrul

doi:10.3329/ijns.v1i1.8608

Cited by 3 publications

(3 citation statements)

References 20 publications

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“…Significant amounts of the RCO positioned above the IL have been reported in humans(Engel et al., 1975; Nasr & El Tahlawi, 2018). However, in animals, there were few reports of this disposition(Akhtar et al., 1970; Durán et al., 2007). According to the comparative analysis shown in Figures 2 and 3, it was observed that only the RCO was above the IL in the analysed specimens (Table 1).…”

Section: Discussionmentioning

confidence: 99%

Morphological importance of coronary ostia in sheep and swine

Pereira

Prates

Seyfert

et al. 2022

Anat Histol Embryol

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The aortic valve was investigated in 58 sheep and 60 swine without heart disease.After fixation in 4% formalin, the distance between the ostia and the elements of the right/left aortic sinuses was measured. For the left coronary ostium (LCO), it was found that in sheep 81% were below and 19% at the level of intercomissural line (IL). In pigs, 88.3% were below and 11.7% at the IL level. In sheep, the OCL was close to the right valve commissure (CVR) in 98.3% and close to the left valve commissure (CVV) in 1.7%. In pigs, it was close to RVC at 83.3% and close to LVC at 16.7%. Regarding to RCO, it was found that in sheep 69% was below, 1.7% was above and 29.3% at the IL level. In pigs, 20% were below, 15% above and 65% at the IL level. The distance of the RCO in relation to the valve commissures was 56.9% close to LVC and 43.1% close to RVC in sheep. In pigs, 81.7% were close to LVC and 18.3% close to RVC. The position of LCO was balanced between sheep and swine, while the RCO in swine was closer to CVE when compared with sheep. The accessory coronary ostium was observed in 18.6% of sheep and 10% of pigs. Thus, it is concluded that in sheep and swine the left coronary artery is perfused only in ventricular diastole. Perfusion of the right coronary artery occurs more frequently in diastole and less frequently in ventricular systole.

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Section: Discussionmentioning

confidence: 99%

Morphological importance of coronary ostia in sheep and swine

Pereira

Prates

Seyfert

et al. 2022

Anat Histol Embryol

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“…When CO are located above IL, perfusion of the coronary arteries occurs unimpeded. This type of arrangement has been observed with various levels of frequency in humans (Cavalcanti et al, 2003;Engel et al, 1975), but in animals (Akhtar et al, 1970;Barszcz et al, 2020;Durán et al, 2007) reports of such dispositions are rare. Records of CO above IL in humans and mice have supported the theory that, when in development, arterial vessels arise distally at the level of the sinotubular junction (Spicer et al, 2015).…”

Section: Discussionmentioning

confidence: 92%

Morphological importance of coronary ostia in equine

Pereira

Seyfert

Santos

et al. 2022

Anat Histol Embryol

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The position of the coronary ostia was investigated in 70 segments of the aorta from young adult crossbred horses. After fixation with a 4% buffered aqueous formaldehyde solution and cautious dissection of the aortic bulb, the morphometric relationships between the coronary ostium and the aortic valvar elements were digitally analysed with the support of Image‐Pro Plus® software. In horses, the left coronary ostium was near to the right valvular commissure in all cases (100%) analysed in this study. The left coronary ostium was at the level of the intercommissural line in 57.1% and below it in 42.9%. The right coronary ostium was near to the left valvular commissure in 58.6% (2.14 ± 0.32 cm) and close to the right valvular commissure in 41.4% (2.27 ± 0.40 cm). Concerning the intercommissural line, the right coronary ostia was at its level in 24.3% and below it in 75.7%. Accessory coronary ostia were observed in 8.6% of the specimens. In view of the results, it was possible to assume that the positions of the coronary ostia in equines tend towards a standard morphological disposition. Thus, perfusion of the left coronary artery occurs partly more frequently in ventricular systole and complete perfusion occurs less frequently in ventricular diastole. For the right coronary artery, perfusion is mostly complete in diastole and partially in ventricular systole.

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“…El hueso cardíaco es ampliamente conocido en rumiantes domésticos, como bovinos, caprinos y ovinos, además de haber sido reportado también en dromedarios (14,15). Además, hay informes de ese hueso también en chimpancés, aunque estos animales no son rumiantes (16).…”

Section: Discussionunclassified

Computed tomography examination of the os cordis in a lamb (Ovis aries Linnaeus, 1758)

Massari¹,

Ferreira-Silva²,

Magalhães³

et al. 2021

Rev MVZ Córdoba

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Objective. The present paper aims to investigate the role of computed tomography as an imaging technique of diagnosis in the identification of the os cordis in ovine, and also how this anatomical structure is morphotopographically characterized in macro and microscopic contexts, seeking to contribute for its functional understanding. Materials and method. The heart of a young male ovine had been donated to the Laboratory of Animal Anatomy of the Surgery Department of the FMVZ/USP, first being subject to a post-mortem examination by means of the cardiac “shedding” (transverse cross sectioning of the heart). A tomographic examination of the anatomic specimen was carried out, as well as the dissection and histological analysis of the collected sample. Results. The results indicate the presence of an osseous structure of 6.39 mm in length, located in the aortic valve of the heart, next to a ring comprised by three valve flaps, tendinous cords, and papillary muscles. The histological findings consist of fibrous connective tissue, cancellous bone tissue, and calcified hyaline cartilage wherein the cardiomyocytes are attached. Conclusions. It is concluded that computed tomography, even though seldom applied to animals of zootechnical interest, poses as an effective tool for the visualization of the os cordis in lambs.

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Morphology and Morphometrical studies on Semi lunar Heart valves of Indigenous Cattle (<i>Bos indicus</i>)

Cited by 3 publications

References 20 publications

Morphological importance of coronary ostia in sheep and swine

Morphological importance of coronary ostia in sheep and swine

Morphological importance of coronary ostia in equine

Computed tomography examination of the os cordis in a lamb (Ovis aries Linnaeus, 1758)

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