This system functions as the body's own pacemaker and keeps the heart beating at a normal rate of 60 to 100 beats per minute. If the activity of this system is interrupted due to heart damage or other medical conditions, it can cause the heart to beat at an abnormal rate or with an ...
A. Emulation of Conduction System Functions in the Hearts of Early Mammalian Embryos T HO MAS R. LLOYD AND H. SCOTT BALDWI N University Heart Center, Children 's Research Center, and Departm ent ofPediatrics (Cardiology), University of Arizona College of Medicine, Tucson, Ar izona 85724 [...
Video Quiz Course 219K views Heart Blood Flow Diagram The heart is the primary engine behind one's circulatory system, or the system responsible for providing oxygen to the various parts of one's body. Generally speaking, the heart's right side receives deoxygenated blood and...
Here, using contrast enhanced micro-computed tomography, we present, in attitudinally appropriate fashion, the first 3-dimensional representations of the cardiac conduction system within the intact human heart. We show that cardiomyocyte orientation can be extracted from these datasets at spatial ...
Understanding conduction of electrical impulses in the mouse heart using high-resolution video imaging technology. Microsc Res Tech. 2001;52:241-250.G.E. Morley, D. Vaidya, Understanding conduction of electrical impulses in the mouse heart using high-resolution video imaging technology, Microsc...
In the heart, the ventricular conduction system propagates the electrical impulses that coordinate ventricular chamber contraction. The QRS interval on an electrocardiogram (ECG) is used clinically to quantify duration of ventricular depolarization in the heart. Prolonged QRS duration is an independent pre...
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In addition, we describe a heart preparation with intact innervation by the vagus nerve that can be used as an ex vivo model for vagal control of the cardiac conduction system. Data acquisition for in vivo and ex vivo electrophysiological study takes ~1 h per mouse, depending on the number ...
Here, we provide the first direct evidence in the intact heart that the cells in myocardial scar tissue are electri- cally coupled to the surrounding myocardium and can support the passive conduction of action potentials. Using models of cardiac injury that produced transmural scars, we demonstrate...
In the heart, the ventricular conduction system propagates the electrical impulses that coordinate ventricular chamber contraction. The QRS interval on an electrocardiogram (ECG) is used clinically to quantify duration of ventricular depolarization in the heart. Prolonged QRS duration is an independent pre...