What is the subendocardial layer?
[ sŭb′ĕn-dō-kär′dē-əl ] n. The layer of loose connective tissue that joins the endocardium and myocardium.
What is epicardial and endocardial?
This combination therapy is a planned, staged approach using the best of the surgical- and catheter-based approach. This procedure involves both Epicardial (surgical) and Endocardial (catheter) ablation. (Ablation treats irregular heartbeat by creating scar tissue in the area of the heart that is causing the problem.)
What is the function of epicardium?
The epicardium is a mesothelial cell layer which contributes to the coronary vessels and myocardium and acts as an important source of trophic signals to maintain continued growth and differentiation of the developing heart.
What is the function of myocardium?
Myocardium: This is the muscle layer of the heart responsible for the pumping action of the heart and occupies 95% of the cardiomyocytes mass and is the thickest layer in the heart wall.
Where is the Subendocardium?
heart
The Purkinje fibers (Purkyne tissue or subendocardial branches) are located in the inner ventricular walls of the heart, just beneath the endocardium in a space called the subendocardium.
What is an epicardial pacemaker?
Summary. Epicardial wires allow temporary pacing after cardiac surgery. Pacing is often the best, and sometimes the only method of treating temporary rhythm disturbances in this context. Temporary epicardial pacing has evolved from simple one-chamber systems to dual chamber, biatrial, and even biventricular systems.
What are epicardial arteries?
The coronary arteries are also called the epicardial arteries because they run along the outer surface of the heart on the epicardium; the main ones are the left coronary artery and the right coronary artery. The left coronary artery divides into the left anterior descending and the left circumflex arteries.
What is meant by epicardium?
Definition of epicardium : the inner layer of the pericardium that closely envelops the heart.
Why is the endocardium important?
First, the endocardium provides a smooth surface for the inside of the heart. This smooth surface allows blood to freely flow along the tissues. This is very important. Without this layer, blood components could stick to the walls of the heart and cause damage to the tissues or even lead to blockages.
What is myocardium made up of?
cardiac muscle cells
The myocardium is the muscular layer of the heart. It consists of cardiac muscle cells (cardiac myocytes [also known as cardiac rhabdomyocytes] or cardiomyocytes) arranged in overlapping spiral patterns.
