Blood supply of the right colonic flexure

1996 ◽  
Vol 18 (S1) ◽  
pp. S46-S47 ◽  
Keyword(s):  
Blood Supply ◽  
Colonic Flexure ◽  
The Right

MORPHOMETRIC ANATOMY AND INTRAORGAN TOPOGRAPHY OF THE CORONARY ORIFICES IN HEART OF ADULT HUMAN

2020 ◽  
pp. 40-47
Author(s):  
Андрей Аркадьевич Якимов ◽  
Евгения Германовна Дмитриева
Keyword(s):  
Coronary Artery ◽  
Blood Supply ◽  
Coronary Sinus ◽  
Left Coronary Artery ◽  
Rare Variants ◽  
Vertical Axis ◽  
Aortic Valves ◽  
Sinotubular Junction ◽  
Adult Human ◽  
The Right

Цель - выявить варианты строения и внутриорганной топографии устьев венечных артерий у взрослого человека при разных типах кровоснабжения желудочкового комплекса сердца. Материал и методы. На вскрытых через некоронарные синусы аорты 65 препаратах клапанов аорты взрослых людей изучили положение устьев венечных артерий, штангенциркулем измеряли минимальный и максимальный диаметры каждого устья, определяли их форму по соотношению диаметров. Результаты. Для устьев обеих артерий типичной была округлая, реже овальная форма. В большинстве случаев левая венечная артерия начиналась в центральной трети, правая - в центральной или задней трети «своего» синуса на уровне верхнего края полулунной заслонки или между ним и синотубулярным соединением. Локализация устьев в пределах синусов, на уровне синотубулярного соединения или выше него была редкой для обеих артерий. В 20 % случаев в правом синусе аорты спереди от устья правой венечной артерии имелось устье конусной артерии. Выводы. Типичные и редкие варианты формы правого и левого устьев, варианты их положения по вертикальной оси аорты одинаковы, варианты их положения по горизонтали различны. Зависимость вариантов формы и положения устьев от типа кровоснабжения желудочков сердца не выявлена. Objective - to reveal common and rare variants of the anatomy and intraorganic topography of the coronary orifices in normal hearts of adult human with regard to patterns of cardiac ventricular blood supply. Material and methods. On 65 specimens of aortic valves opened through non-coronary sinus, the minimal and maximal diameters of each orifice were measured with a caliper, the shape of the orifices was determined according to the ratio of the diameters, and the position of the orifices was studied. Results. The orifices of both right and left coronary arteries were mostly found to be round, less frequently oval. In most cases, the left coronary artery arose from the central third and the right artery arose from the central or posterior third of corresponding sinus at the level of the upper edge of the semilunar cusp or between the edge and the sinotubular junction. The localization of the arterial orifice within the sinuses at the level of sinotubular junction or above it was uncommon for the both arteries. In 20 % of cases, the conal artery arose with its own orifice in front of the mouth of the right coronary artery. Conclusions. Typical and rare shapes of the coronary orifices, variants of their position regarding to vertical axis of the aorta are the same, whereas variants of their position in horizontal axis are different. There is no relationship between variants of form of the orifices, position of the orifices and types of blood supply of heart ventricles.

A dual blood supply protects the right gastroepiploic arterial graft: Report of two cases

1995 ◽  
Vol 34 (3) ◽  
pp. 227-230
Author(s):  
Hideki Hashimoto ◽  
Takaaki Isshiki ◽  
Yuji Ikari ◽  
Kazuhiro Hara ◽  
Fumihiko Saeki ◽  
...  
Keyword(s):  
Blood Supply ◽  
Arterial Graft ◽  
Dual Blood Supply ◽  
The Right

scholarly journals Anatomical Variant of the Liver Blood Supply

2015 ◽  
Vol 88 (3) ◽  
pp. 420-423
Author(s):  
Ivan Maslarski
Keyword(s):  
Blood Supply ◽  
Cystic Artery ◽  
Anatomical Variant ◽  
Liver Transplantations ◽  
Right Lobe ◽  
The Common ◽  
The Difference ◽  
The Right ◽  
Radiological Procedures ◽  
Portal Region

Vascular variations are significant for liver transplantations, radiological procedures, laparoscopic method of operation and for the healing of penetrating injuries, including the space closer to the hepatic area. This variants are very common in the abdominal region, and their description will be useful. During a routine dissection of 73 year old female cadaver, we found on subhepatic region that the blood supply of the liver differed from a normal one. The difference was found in the absence of the right liver branch and the cystic artery, which normally arises from the common hepatic artery. After a detailed dissection of the superior mesenteric artery we distinguished a branch, which is routed to the right lobe of the liver. The diameter of this vessel is 3.7 mm and the length is 8.2 cm. In the artery pathway, three consecutive branches were observed. The first branch was found about 2.02 cm before the portal region of the liver. The second one became visible after another millimeter and finally the artery made one little curve and became a cystic artery.

Blood supply to the caudate lobe of the liver from the right inferior phrenic artery: observation by cone-beam computed tomography during arteriography

2020 ◽  
Vol 45 (9) ◽  
pp. 2851-2861
Author(s):  
Shiro Miyayama ◽  
Masashi Yamashiro ◽  
Natsuki Sugimori ◽  
Rie Ikeda ◽  
Takuya Ishida ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Blood Supply ◽  
Cone Beam Computed Tomography ◽  
Caudate Lobe ◽  
Cone Beam ◽  
Inferior Phrenic Artery ◽  
Phrenic Artery ◽  
The Right

Structure and function in the excretory system of archaeogastropods and their significance in the evolution of gastropods

1985 ◽  
Vol 310 (1145) ◽  
pp. 383-406 ◽  
Keyword(s):  
Blood Supply ◽  
Renal Vein ◽  
Left Kidney ◽  
Structure And Function ◽  
Excretory System ◽  
Ultrastructural Organization ◽  
Primary Role ◽  
Partial Restoration ◽  
The Right ◽  
And Function

Three species of archaeogastropod mollusc, Monodonta lineata (da Costa), Emarginula reticulata Sowerby and Patella vulgata L. were selected as representative members of the Trochacea, Fissurellacea and Patellacea, respectively, for a comparative anatomical and ultrastructural study of the excretory system. Primary urine formation takes place by filtration of blood through the walls of the paired auricles in Monodonta and Emarginula and of the single auricle and ventricle in Patella . Urine then passes to right and left kidneys along the renopericardial canals. Contrary to earlier reports the two kidneys are different in structure and function in all three species, the larger right kidney retaining the primitive function of nitrogenous excretion, the left having a predominantly resorptive role and with a capacity to abstract from the blood solutes of larger molecular mass. The difference in the size of the two kidneys is exaggerated in Patella and Emarginula as a consequence of partial restoration of bilateral symmetry in these limpets. It has been possible to demonstrate at the ultrastructural level that the minute left kidney of Emarginula is functional. The vacuolated epithelial cells of the right kidney contain layered excretory spherules composed of purines, melanin and ferric iron in different proportions in the three genera. There is close similarity in the ultrastructural organization of these cells in Monodonta and Emarginula , but those of Patella show marked differences and their excretory spherules contain a higher proportion of melanin. The position of the left kidney in the mantle skirt, as exemplified by Monodonta , is believed to have arisen in the earliest gastropods correlated with the development of helical coiling. This was accompanied by a change in its blood vessels. It has lost its afferent renal vein, which primitively would have carried deoxygenated blood from the viscera, an arrangement which persists in the right kidney. The left efferent renal vein is reduced in Monodonta and lost in Patella and Emarginula . A new vessel has arisen linking left auricle and left kidney and there is evidence to suggest that it carries post-branchial oxygenated blood. It is believed to serve as both an afferent and major efferent route. The physiological implications of this change in the blood supply are discussed and held to be responsible for the functional differences between the two kidneys, creating conditions in the left which favour resorption of organic solutes and ions, and leaving the right kidney with the primary role of nitrogenous excretion. The evolution of the nephridial gland is examined in this context and is also believed to be correlated with the change in the blood supply to the left kidney. Ultrastructural evidence is given in support of its suggested resorptive function. The significance of the differences between right and left kidneys of archaeogastropods is discussed in relation to the evolution of the monotocardian excretory system, and the possible phylogenetic relationships of the groups of archaeogastropods are considered.

Lengthening of the mesentery using the marginal vascular arcade of the right colon as the blood supply to the ileal pouch

1995 ◽  
Vol 38 (8) ◽  
pp. 893-895 ◽  
Author(s):  
Ricardo N. Goes ◽  
Patrick Nguyen ◽  
Dan Huang ◽  
Robert W. Beart
Keyword(s):  
Blood Supply ◽  
Ileal Pouch ◽  
Right Colon ◽  
Vascular Arcade ◽  
The Right

scholarly journals Variants of the anatomical structure of the coronary arteries and the left atrium remodeling in patients with different forms of atrial fibrillation

2018 ◽  
Vol 96 (9) ◽  
pp. 809-813
Author(s):  
Nikita L. Sharikov ◽  
S. M. Chibisov ◽  
O. N. Ragozin ◽  
S. Sh. Gasimova
Keyword(s):  
Atrial Fibrillation ◽  
Coronary Artery ◽  
Left Atrium ◽  
Blood Supply ◽  
Right Coronary Artery ◽  
Left Coronary Artery ◽  
Sinoatrial Node ◽  
Anatomical Structure ◽  
Case Histories ◽  
The Right

One of the reasons leading to dilatation of the left atrium is atrial fibrillation. A retrospective analysis of 136 case histories of patients with various forms of “non-valvular” atrial fibrillation was performed, depending on the shape of atrial fibrillation, the patients were divided into 3 groups. In patients with atrial fibrillation in 62.5%, the source of the atrial branches was the envelope branch of the left coronary artery. Atrial branches originating from the right coronary artery system were identified in 35.8%. In men, atrial arteries occur significantly more often. The results differ from publications, according to which the blood supply of the atria and sinoatrial node from 60 to 75% is carried out by branches departing from the basin of the right coronary artery. The degree of dilatation of the left atrium does not depend on the source of blood supply, but a correlation between the size of the left atrium and the diameter of the branches of the artery of the sinatrial node in the group of patients with paroxysmal atrial fibrillation is traced.

scholarly journals REMODELING PECULIARITIES OF ATRIAL ARTERY IN CONDITIONS OF POSTRESECTION PORTAL HYPERTENSION

2021 ◽  
pp. 38-43
Author(s):  
М. S. Hnatjuk ◽  
N. M. Gdanska ◽  
L. V. Tatarchuk ◽  
Т. І. Gargula ◽  
О. В. Jasinovsky
Keyword(s):  
Endothelial Cells ◽  
Portal Hypertension ◽  
Left Atrium ◽  
Blood Supply ◽  
The Body ◽  
Male Rats ◽  
Outer Diameter ◽  
Functional Changes ◽  
The Media ◽  
The Right

It is known that structural and functional changes in the heart can be caused by various changes in hemodynamics, which include post resection portal hypertension. It should be noted that the structure of the atrial arteries in postresection portal hypertension has not been studied enough. The purpose of the study is to investigate the peculiarities of atrial artery remodeling in the conditions of post resection portal hypertension. Material and methods. The arteries of the atria of 34 male rats, which were divided into 2 groups, were studied by a complex of morphological methods. The group 1 consisted of 15 experimental intact animals; group 2 included 19 rats with post resection portal hypertension, which was simulated by removal of the left and right lateral lobes of the liver. Euthanasia of rats was performed by bloodletting under conditions of thiopental anesthesia one month after the start of the experiment. The outer and inner diameters of the atrial arteries of medium and small calibers, the thickness of the media and adventitial membrane, Wagenworth and Kernogan indices, the height of endothelial cells, the diameters of their nuclei, nuclear-cytoplasmic ratios in the studied endothelial cells, and relative volumes of damaged endotheliocytes were measured. Quantitative indicators were processed statistically. Results. It was established that in the conditions of post resection portal hypertension the arteries of small caliber of the atria changed more markedly. The outer diameter of these vessels of the left atrium increased by 4.2 %, the right - by 3.3 % (p <0.05), the thickness of the media and the adventitial membrane increased by 12.58 % and 45.7 % and respectively 11.8 % and 33.7 % (p <0.001, their lumen decreased by 13.5 % and 10.7 %, respectively) (p <0.001). The Wagenworth index of small caliber arteries increased markedly, and the Kernogan index decreased. Nuclear-cytoplasmic ratios in endotheliocytes of small arteries of the left atrium were changed by 7.6 %, and in the right - by 6.1 % (p<0.01), the relative volumes of damaged endotheliocytes respectively increased by 7.6 and 5, 2 times (p <0.001). Damage to a significant number of endothelial cells led to their dysfunction, blockade of NO synthase, decreased NO synthesis, activation of its degradation, which exacerbated spasm, narrowing of vessels and significantly impaired blood supply to the body and complicated by hypoxia.Histologically at post resection portal hypertension, there were pronounced vascular disorders, plethora, dilation of mainly venous vessels, perivasal edema and stroma edema, foci of dystrophic, necrobiotic, apoptotically altered endotheliocytes, stromal structures and cardiomyocytes. There was also swelling of endothelial cells, their dystrophy, necrobiosis, desquamation and proliferation. Conclusion. Post resection portal hypertension leads to severe remodeling of mainly small atrial arteries, which is characterized by thickening of their wall, narrowing of the lumen, changes in the Kernogan and Vaughanworth indices, endothelial cell damage, endothelial dysfunction, decreasing of organ blood supply, hypoxia, trophic disorders, dystrophic and necrobiolic changes of tissues and cells, infiltration, sclerosis.

scholarly journals How does knowledge of the blood supply to an intracardiac tumour help?

2019 ◽  
Vol 12 (2) ◽  
pp. e225900
Author(s):  
Prabha Nini Gupta ◽  
Nishant Sagar ◽  
Ritesh Ramachandran ◽  
Velenurre Rajagopalan Rajeshekharan
Keyword(s):  
Coronary Artery ◽  
Coronary Angiography ◽  
Blood Supply ◽  
Right Coronary Artery ◽  
Left Atrial ◽  
Coronary Angiogram ◽  
Left Atrial Myxoma ◽  
Cardiac Tumour ◽  
Tumour Vascularity ◽  
The Right

Myxoma is a common benign tumour found in the heart. On reviewing literature, we found some left atrial myxomas receive blood supply from the right coronary artery. Performing a coronary angiogram in a cardiac tumour has the following uses: (1) it shows the vascularity that can be ligated by the surgeon at operation; (2) if there is a blood supply visible, it may not be an intracardiac thrombus; (3) the coronary angiogram may detect a myxoma even before an echocardiogram does so; (4) some myxomas may bleed into the right atrium or left atrium and this may be seen on coronary angiography. We show here the neovascularity of a left atrial myxoma and its blood supply from the right coronary artery. We recommend that all routine coronary angiograms be reviewed carefully for any signs of tumour vascularity or tumour blush as this would prevent missing early myxomas. Echocardiography is the gold standard for detection of myxomas but literature has a number of intracardiac tumours that were detected only by the tumour blush. Some left atrial tumours have been treated by occluding their blood supply.The absence of a blood supply on coronary angiography could rule out a benign cardiac tumour that usually has a blood supply.

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