The external layer that covers the heart – also called the visceral layer of the heart; between the visceral layer and the outer parietal layer is the pericardial sac; note that the coronary arteriesThe coronary arteries provide blood to the heart tissues, carrying blood first across the epicardium, then the myocardium and finally terminating in the endocardium. The epicardium forms the outer layer of the heart. The myocardium forms the middle layer and... travel along the epicardium before burrowing into the myocardiumThe muscle layer of the heart; the middle layer that is responsible for contraction of the heart. The muscular myocardium is the thickest layer and the workhorse of the heart. It is composed of specialized muscle and electrical cells that....
The mechanical structures of the heart include the heart’s layers, chambers, septum, valves, and the major vesselsSeveral major vessels enter and exit the heart. The arteries carry blood away from the heart while the veins bring blood to the heart. While memorizing the major vessels is unnecessary, having a basic picture of the major vessels is... (including the coronary arteries). Each of these structures contribute to the effective ejection of blood – the primary purpose of the heart.
The heart is encased in two protective layers. The outer layer, the pericardial sac, covers the heart. It folds in on itself at the aortaBegins with the aortic valve, the largest main vessel that carries oxygenated blood from the ventricles to the body. Major Vessels 1. Six Second ECG Guidebook (2012), T Barill, p. 15, 190 forming the epicardial surface of the heart. Between these layers is a small amount of fluid that provides a non-stick surface between these layers.
The epicardium forms the outer layer of the heart. The myocardium forms the middle layer and the endocardiumThe smooth innermost layer of the heart covers the inner chambers and the cardiac valves. The mechanical structures of the heart include the heart’s layers, chambers, septum, valves, and the major vessels (including the coronary arteries). Each of these structures... the innermost layer of the heart. The coronary arteries provide blood to the heart tissues, carrying blood first across the epicardium, then the myocardium and finally terminating in the endocardium.
1. Six Second ECG GuidebookA Practice Guide to Basic and 12 Lead ECG Interpretation, written by Tracy Barill, 2012 Introduction The ability to correctly interpret an electrocardiogram (ECG), be it a simple six second strip or a 12 lead ECG, is a vital skill... (2012), T Barill, p. 10, 196