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相关概念视频

Pathophysiology of Cardiac Performance01:29

Pathophysiology of Cardiac Performance

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Typical heart performance is influenced by heart rate, rhythm, myocardial contraction, and metabolism or blood flow. The cardiac muscle exhibits distinct electrophysiological features, including pacemaker activity and calcium channel control, which play a vital role in the heart's response to various drugs. The autonomic nervous system, comprising the sympathetic and parasympathetic branches, regulates heart rate. Sympathetic activation increases heart rate, while parasympathetic activation...
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Layers of the Heart Wall01:15

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The heart wall comprises three distinct layers: the epicardium, myocardium, and endocardium. The outermost layer, the epicardium, is the visceral layer of the serous pericardium, featuring a thin, transparent mesothelial surface and an inner layer of areolar connective tissue with fat deposits that increase with age.
The myocardium, the thickest layer, consists of cardiac muscle cells interconnected by intercalated discs and crisscrossing connective tissue fibers. These muscle fibers contract...
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Chambers of the Heart01:16

Chambers of the Heart

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The human heart is a complex organ made up of four chambers: the right and left atria and the right and left ventricles. These internal chambers are separated by partitions known as the interatrial and interventricular septa. The exterior of the heart features a groove known as the coronary sulcus that demarcates the atria from the ventricles, while the anterior and posterior interventricular sulci distinguish between the two ventricles.
Deoxygenated blood from the body is received in the right...
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Evaluation of Left Ventricular Structure and Function using 3D Echocardiography
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脊椎层如何影响左心室功能.

Ionela Simona Visoiu1, Bjarke Jensen2, Roxana Cristina Rimbas1

  • 1Department of Cardiology and Cardiovascular Surgery, SEARCH-VASC Center of Excellence, University of Medicine and Pharmacy Carol Davila, University and Emergency Hospital, Bucharest, Romania.

Journal of cardiology
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概括

成年人心脏的筋膜层 (心肌) 在功能上与紧层相似. 这种相似之处解释了为什么大多数带有增加轨道的个体仍然没有症状,尽管心脏结构的变化.

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心声回声扫描 (Echocardiography) 是一种心声回声扫描.喷射分数的喷射分数是什么过度的穿越运动.心脏衰竭是因为心脏衰竭.没有紧缩的非紧缩.

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科学领域:

  • 心血管生物学 心血管生物学
  • 心脏解剖学 心脏解剖学
  • 肌心脏生理学 肌心脏生理学

背景情况:

  • 在胚胎发育中至关重要的腹腔干层,在成年人中表现出显著的个体差异.
  • 其相对于紧心肌的功能能力不太清楚,通常被认为是劣质的.
  • 了解椎功能是理解其在心脏病原性中的作用的关键.

研究的目的:

  • 审查目前关于心室带层自然变异和功能特征的知识.
  • 为了比较状心肌的特性与紧心肌的特性.
  • 为了阐明穿刺对心脏功能和健康的影响.

主要方法:

  • 对研究的叙述性综述 关于轨道培养变化的研究.
  • 组织组织,转录学和免疫组织化学的分析.
  • 评估血管化,电传播和机械功能 (透缩和收缩).

主要成果:

  • 成年人气管和紧心肌没有显著的转录差异.
  • 两个心肌层都具有相当数量的类蛋白质,线粒体和血管供应.
  • 类似的结构特征表明,每克组织中均有相当的中风工作,并且在椎层中具有很高的射出率.

结论:

  • 成人心室肌和紧层的心肌在功能和结构上非常相似.
  • 这种相似之处清楚地解释了为什么过度的轨道往往没有症状.
  • 进一步的研究可以完善我们对心脏病和心脏健康状况的椎间板层贡献的理解.