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Inferior mesenteric artery anatomy-demonstration скачать в хорошем качестве

Inferior mesenteric artery anatomy-demonstration 5 месяцев назад

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Inferior mesenteric artery anatomy-demonstration
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Inferior mesenteric artery anatomy-demonstration

Cadaveric demonstration of inferior mesenteric artery. Its the artery which supplies the hind gut. we will be looking at all the branches of the artery, subscribe for more videos    / @sumitdebnath7394   The inferior mesenteric artery (IMA) is a major branch of the abdominal aorta. It supplies arterial blood to the organs of the hindgut – the distal 1/3 of the transverse colon, splenic flexure, descending colon, sigmoid colon and rectum. In this article, we shall look at the anatomy of the inferior mesenteric artery – its anatomical position, major branches and clinical correlations. The inferior mesenteric artery is the last of the three major anterior branches of the abdominal aorta (the other two are the coeliac trunk and superior mesenteric artery). It arises at L3, near the inferior border of the duodenum, 3-4 cm above where the aorta bifurcates into the common iliac arteries. As the artery arises from the aorta, it descends anteriorly to its parent vessel, before moving to the left side. It is a retroperitoneal structure – situated behind the peritoneum. The branches of the inferior mesenteric artery supply the structures of the embryonic hindgut. These include the distal 1/3 of the transverse colon, splenic flexure, descending colon, sigmoid colon and rectum. There are three major branches that arise from the IMA – the left colic artery, sigmoid artery and superior rectal artery. Left Colic Artery The left colic artery is the first branch of the IMA. It supplies the distal 1/3 of the transverse colon and the descending colon. After arising from its parent artery, it travels anteriorly to the psoas major muscle, left ureter and left internal spermatic vessels, before dividing into ascending and descending branches: Ascending branch – crosses the left kidney anteriorly, before entering the mesentery of the transverse colon, moving superiorly. It supplies the distal 1/3 of the transverse colon, and the upper aspect of the descending colon. Descending branch – moves inferiorly to supply the lower part of the descending colon. It anastomoses with the superior sigmoid artery. Sigmoid Arteries The sigmoid arteries supply the descending colon and the sigmoid colon. There are typically 2-4 branches, with the uppermost branch termed the superior sigmoid artery. They run inferiorly, obliquely and to the left, crossing over the psoas major, left ureter and left internal spermatic vessels. Superior Rectal Artery The superior rectal artery is a continuation of the inferior mesenteric artery, supplying the rectum. It descends into the pelvis, crossing the left common iliac artery and vein. At the S3 vertebral level, the artery divides into two terminal branches – one supplying each side of the rectum. Within the walls of the rectum, smaller divisions of these branches eventually communicate with the middle and inferior rectal arteries. The inferior mesenteric artery (IMA) is a major branch of the abdominal aorta that supplies oxygenated blood to the distal parts of the large intestine and rectum 🫀. Arising at the level of L3, just above the aortic bifurcation, the IMA branches into the left colic artery, sigmoid arteries, and superior rectal artery. These branches provide vascular support to the descending colon, sigmoid colon, and the upper rectum, ensuring efficient digestion and nutrient absorption 🍴. The IMA forms collateral anastomoses with the middle colic artery via the marginal artery of Drummond, contributing to the redundancy of blood supply in the intestines. This makes it essential during surgeries or conditions like ischemic colitis. Despite being smaller than the superior mesenteric artery, the IMA plays a vital role in maintaining bowel function and is a critical landmark in colorectal surgeries 🚑. #InferiorMesentericArtery #IMA #AbdominalAnatomy #LargeIntestine #VascularSupply #DigestiveSystem #MedicalAnimation #MBBSAnatomy #ClinicalAnatomy #MedicalEducation #SurgicalAnatomy #MedStudentLife #USMLEPrep #BoardExamPrep #ColorectalSurgery #AnatomyMadeSimple #medicalanimations #fmge #fmgevideos #rapidrevisionfmge #fmge2024 #mbbslectures #nationalexitexam #nationalexittest #neetpg #usmlepreparation #usmlestep1 #fmge #usmle #drgbhanuprakash #medicalstudents #medicalstudent #medicalcollege #neetpg2025 #usmleprep #usmlevideos #usmlestep1videos #medicalstudents #neetpgvideos #usmlestep2videos

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