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Videos de Conceptos Relacionados

Anatomy of the Heart01:27

Anatomy of the Heart

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.
Overview of the Heart01:07

Overview of the Heart

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...
Layers of the Heart Wall01:15

Layers of the Heart Wall

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...
Chambers of the Heart01:16

Chambers of the Heart

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...
Heart Valves01:16

Heart Valves

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...
Anatomy of the Heart01:20

Anatomy of the Heart

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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Video Experimental Relacionado

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Isolation, Culture, and Functional Characterization of Adult Mouse Cardiomyoctyes
12:49

Isolation, Culture, and Functional Characterization of Adult Mouse Cardiomyoctyes

Published on: September 25, 2013

Receptores que abarcan siete membranas y la función cardíaca.

Howard A Rockman1, Walter J Koch, Robert J Lefkowitz

  • 1Departments of Medicine and Cell Biology, Duke University Medical Center, Durham, North Carolina 27710, USA. h.rockman@duke.edu

Nature
|January 24, 2002
PubMed
Resumen

Comprender los receptores cardíacos y las vías de señalización es clave para desarrollar nuevos tratamientos para las enfermedades cardiovasculares. Esta investigación se centra en los receptores acoplados a la proteína G, cruciales para la comunicación de las células del corazón.

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Área de la Ciencia:

  • Biología cardiovascular Biología cardiovascular
  • Farmacología molecular farmacología molecular.
  • La señalización celular de las células.

Sus antecedentes:

  • El corazón responde a varias señales extracelulares como las hormonas y los neurotransmisores.
  • Comprender estos mecanismos de señalización es vital para el tratamiento de enfermedades cardiovasculares.
  • Los receptores que abarcan siete transmembranas, o receptores acoplados a la proteína G, son los receptores cardíacos más comunes.

Objetivo del estudio:

  • Explorar las complejas interacciones entre los receptores cardíacos y las vías de señalización.
  • Identificar nuevos objetivos terapéuticos para las enfermedades cardiovasculares.

Principales métodos:

  • Centrarse en los receptores acoplados a la proteína G (GPCR) en la investigación cardíaca.
  • Revisión de los recientes descubrimientos en la señalización cardíaca.

Principales resultados:

  • Los receptores acoplados a la proteína G juegan un papel importante en la comunicación de las células cardíacas.
  • Existen interacciones complejas entre los receptores cardíacos y su entorno.

Conclusiones:

  • Una mayor comprensión de los receptores cardíacos acoplados a la proteína G puede conducir a nuevas estrategias terapéuticas.
  • Dirigirse a estos receptores puede ofrecer nuevos enfoques para combatir las enfermedades cardiovasculares.