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相关概念视频

Abdominal Aorta01:25

Abdominal Aorta

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Once the aorta traverses the diaphragmatic plane at the aortic hiatus, it is known as the abdominal aorta. This anatomical structure is positioned leftward of the spinal column, encased within a cocoon of adipose tissue behind the peritoneal cavity. It terminates at the L4 vertebra, where it splits into the common iliac arteries. Prior to this bifurcation, the abdominal aorta gives rise to several vital branches.
The celiac trunk, a singular artery, divides into the left gastric artery, which...
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The Arch of Aorta01:10

The Arch of Aorta

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The coronary arteries, originating from the ascending aorta, bifurcate from two sinuses located within the ascending aorta. Positioned just above the aortic semilunar valve, these sinuses house essential aortic baroreceptors and chemoreceptors, crucial for maintaining cardiac function. The left coronary artery and the right coronary artery branch off from the left posterior and anterior aortic sinuses, respectively.
Encircling the heart, the coronary arteries form a ring-like structure before...
466
Blood Supply to the Digestive System01:16

Blood Supply to the Digestive System

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Splanchnic circulation refers to the network of blood vessels that supply and drain blood from the abdominal organs involved in digestion, including the stomach, liver, pancreas, intestines, and spleen. This circulation delivers essential nutrients and oxygen while removing waste products from these organs.
Blood Supply to the Digestive System: The splanchnic circulation involves three main arteries: the celiac artery (also known as the celiac trunk) and the superior and inferior mesenteric...
470
Thoracic Aorta01:15

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The thoracic section of the aorta begins at the T5 vertebra and extends to the T12 level at the diaphragm, initially progressing through the mediastinum to the left of the spinal column. Throughout its course in the thoracic segment, the thoracic aorta emits various offshoots known collectively as visceral and parietal branches. The branches that predominantly supply blood to visceral organs are termed visceral branches and include bronchial, pericardial, esophageal, and mediastinal arteries,...
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Large Intestine01:09

Large Intestine

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The large intestine is divided into three main regions: the cecum, colon, and rectum. Extending from the ileocecal valve to the anus, it frames the small intestine on three sides.
The ileocecal sphincter, a mucous membrane fold, guards the opening from the ileum to the large intestine. This valve permits material from the small intestine to pass into the large intestine. Attached to the ileocecal valve is the cecum. This small pouch, approximately 6 cm long, has a twisted, coiled tube known as...
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Endoscopic Procedures II: Colonoscopy01:25

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The colon, or large intestine, is the final segment of the digestive system. Its primary functions include absorbing water and vitamins produced by gut bacteria and transforming waste from liquid to solid to form stool. In adults, the large intestine is approximately 5 feet long and consists of four main sections:
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相关实验视频

Updated: May 11, 2025

Multimodality Diagnosis of Mesenteric Ischemia
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左结肠动脉:一个全面的分析.

Andrzej Wrona1,2, Jakub Gliwa1,3, Martyna Dziedzic1,3

  • 1Department of Anatomy, Jagiellonian University Medical College, Mikołaja Kopernika 12, 33-332, Kraków, Poland.

Anatomical science international
|April 18, 2025
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概括

左结肠动脉 (LCA) 解剖学的变化很常见. 了解这些变异,特别是其来自下等等脉动 (IMA) 的起源,对于安全的结直肠手术和预防缺血至关重要.

关键词:
解剖学上的变化.结肠直肠外科手术是什么意思下腹中枢动脉的下腹中枢动脉左大肠动脉左大肠动脉结合 结合 结合 结合

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科学领域:

  • 血管解剖学 血管解剖学
  • 手术解剖学手术解剖学
  • 结肠直肠手术 结肠直肠手术

背景情况:

  • 左结肠动脉 (LCA) 呈现出显著的解剖变异性.
  • 现有的分类旨在标准化LCA解剖学的描述.
  • 了解LCA变异对于结直肠外科手术至关重要.

研究的目的:

  • 分析左结肠动脉 (LCA) 的解剖学和形态学变异.
  • 提供数据,可以增强外科医生在结直肠手术中的解剖学知识.
  • 为了识别常见的LCA变异及其起源来自下层中枢动脉 (IMA).

主要方法:

  • 75名患者的回顾性分析,其中包括67名LCA.
  • 评估LCA起源,分支模式和形态测量.
  • 使用Yada/Wang系统对LCA变异进行分类.

主要成果:

  • 大多数LCA的起源直接来自下层中枢动脉 (IMA) (71.64%).
  • 很大一部分是通过colo-sigmoid干 (26.87%) 产生的.
  • 类型I (Yada/Wang分类) 是最常见的变异 (50.00%),其中位直径为2.12mm,其中位横截面积为3.38mm2的起源.

结论:

  • 详细分析LCA的解剖学和形态学变化.
  • 这些发现为提高结直肠手术的安全性和有效性提供了见解,特别是IMA绑定.
  • 强调术前成像和解剖学知识,以最大限度地减少阴性损伤,并保持肠道输液.