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Videos de Conceptos Relacionados

Anatomy of the Heart01:27

Anatomy of the Heart

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The human heart is made up of three layers of tissue that are surrounded by the pericardium, a membrane that protects and confines the heart. The outermost layer, closest to the pericardium, is the epicardium. The pericardial cavity separates the pericardium from the epicardium. Beneath the epicardium is the myocardium, the middle layer, and the endocardium, the innermost layer. There are four chambers of the heart: the right atrium, the right ventricle, the left atrium, and the left ventricle.
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Overview of the Heart01:07

Overview of the Heart

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The heart, a muscular organ located in the chest, functions as the body's pump, circulating blood through the vascular system. It has four chambers: two atria on top and two ventricles below. The right atrium receives deoxygenated blood from the body and passes it to the right ventricle, which pumps it to the lungs for oxygenation. The left atrium receives oxygenated blood from the lungs and transfers it to the left ventricle, which pumps it to the rest of the body.
The heart's structure...
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Location and Orientation of the Heart01:13

Location and Orientation of the Heart

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The human heart, despite its modest size and weight, is an organ of remarkable strength and endurance. Roughly the size of a fist, the heart weighs between 250 and 350 grams and is nestled within the mediastinum, the medial cavity of the thorax. It extends obliquely for about 12 to 14 cm, resting on the superior surface of the diaphragm. The heart is positioned anterior to the vertebral column and posterior to the sternum, with two-thirds of its mass lying to the left of the midsternal line.
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Heart Valves01:16

Heart Valves

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The human heart is a complex organ with an intricate system of valves that regulate blood flow. There are two main types of valves: atrioventricular (AV) valves and semilunar valves.
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
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Development of the Heart01:27

Development of the Heart

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The development of the human heart, a crucial organ, commences from the mesoderm on the 18th or 19th day after fertilization. This process initiates in the cardiogenic area, a group of mesodermal cells at the embryo's head end, which evolves into elongated strands known as cardiogenic cords. These cords undergo a transformation to form hollow-centered endocardial tubes.
As the embryo undergoes lateral folding, these paired tubes approach each other, merging into a single primitive heart...
3.9K
Anatomy of the Heart01:20

Anatomy of the Heart

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The heart is a hollow, muscular organ approximately the size of a fist, consisting of four chambers. It is enclosed in the pericardium, a fibrous sac with two layers: the visceral and parietal pericardium, separated by a fluid-filled space containing serous fluid to reduce friction.
The heart has three layers: the innermost endocardium, the muscular myocardium, and the outer epicardium, all working together for optimal cardiac function.
Chambers of the Heart
The heart is made up of four...
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Updated: Apr 30, 2026

Author Spotlight: Advancing Human Cardiac Anatomy Through Multi-Scale Analysis of Hearts
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El corazón univentricular es el corazón univentricular.

Paul Khairy1, Nancy Poirier, Lise-Andrée Mercier

  • 1Adult Congenital Heart Center, Montreal Heart Institute, 5000 Bélanger St, Montreal, Quebec, H1T 1C8, Canada. paul.khairy@umontreal.ca

Circulation
|February 14, 2007
PubMed
Resumen
Este resumen es generado por máquina.

Los corazones univentriculares, condiciones congénitas complejas, han intrigado a los profesionales médicos desde 1699. Este informe detalla su clasificación, genética, fisiología y manejo, centrándose en la relevancia de la cardiología en adultos.

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Área de la Ciencia:

  • Cardiología Cardiología.
  • Enfermedad cardíaca congénita.
  • La historia de la medicina y la historia de la medicina.

Sus antecedentes:

  • El corazón univentricular, caracterizado por un solo ventrículo, ha sido documentado desde 1699.
  • Su complejidad ha impulsado avances significativos en embriología, fisiología e intervenciones quirúrgicas.

Objetivo del estudio:

  • Proporcionar una visión global de las afecciones cardíacas univentriculares.
  • Centrarse en aspectos relevantes para los cardiólogos adultos, uniendo la atención pediátrica y la de adultos.

Principales métodos:

  • Revisión de la literatura y síntesis de los conocimientos existentes.
  • Compilación de información sobre nomenclatura, epidemiología, genética, fisiología, diagnóstico y terapia.

Principales resultados:

  • Clasificación detallada y subtipos patológicos de los corazones univentriculares.
  • Discusión de factores genéticos, desafíos fisiológicos y presentaciones clínicas.
  • Visión general de las herramientas de diagnóstico, estrategias terapéuticas y resultados postoperatorios.

Conclusiones:

  • Los corazones univentriculares representan un espectro de enfermedades cardíacas congénitas complejas.
  • La comprensión de estas condiciones es crucial para un manejo eficaz tanto en las poblaciones pediátricas como en las de adultos, con un énfasis específico en las preocupaciones de la cardiología de los adultos.