Answer:
Endocardium: is the innermost layer of the heart.
Myocardium: is the muscle layer
Pericardium: is a double-wall sac that cointains the heart.
Explanation:
While the Pericardium protects the heart against infection, provides lubrication and fixes it to the mediastinum, the Myocardium is the middle layer from the heart and the thickest one. It has specialized muscle fibers that carry electrical impulses to the ventricles. It is the muscle layer comprised of cardiomyocytes. The endocardium is comprised of two layers: the inner one is made of endothelial cells and the second one is a subendocardial connective tissue where branches of the heart's conduction system are inmersed.
Answer:
because as at age the boys dont listen to their parents and ride the bike at high speed which is very dangerous and they are careless they think they handal the vehical thou speed is ok atleast they will not were the safty think
so this may be a reason
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Muscle its to cover the bones and make a shape,and to protect blood systems
Grains are rich in carbohydrates.
