None cause our heart is pure just the brains have lies
The myocardium (middle layer)
Myocardium
3
What makes up the walls of the heart are 3 different layers that consist of tissue and muscle. These muscles contract.
Actually, the heart is surrounded by a pericardium and its wall is made of 3 layers. Therefore, the terminology "4 walls of the human heart" is quite misleading. So, from outside to inside, we have: *Pericardium *Heart wall: -Epicardium -Myocardium -Endocardium
A pacemaker is nothing but a specialized mass of muscle tissue present in the wall of the heart. It initiates the heart beat.
The heart is a main organ . to protect it self from the external effects through cardiac layers which are number in 2 the space between them filled with pericardiacfluid .
In the Interventricular septum, between the right and left ventricles of the heart.
Cardiac muscle makes up the wall of the heart. It contracts to pump blood around the body. Smooth muscle is found in the walls of all hollow organs except the heart. There are layers to the wall are myocardium, epicardium and andocardium. The heart is covered by a protective sack called the pericardium. The wall protects the heart and makes it contract and relax.
the heart
It is a tear in the wall of the aorta that causes blood to flow between the layers of the wall of the aortaand force the layers apart.
The layers of the HEART {outermost-innermost} 1. Epicardium {This is the outer layer is also known as VISCERAL PERICARDIUM and contains fat, which helps to cushion the heart} 2. Myocardium {This middle layer is the thickest layer of the wall and is made primarily of cardiac muscle} Endocardium {This innermost layer is thin and very smooth, and stretches as the heart pumps blood}