The thick layer of the heart wall that contains contractile cardiac muscle tissue is the myocardium. The layer of the heart wall synonymous with the visceral layer of the serous pericardium is epicardium.
The layer of heart wall composed of cardiac muscle tissue is called the myocardium.
it is myocardium
Myocardium
myocardium
Contractile cells are the smooth muscle cells of the heart that... contract. They get their signal from the nodes within the heart, which spontaneously fire action potentials (because of leak channels).
There is no such thing. Were something non-contractile, it would cease to be called a muscle. You probably meant "What is a contractile muscle structure?" or something similar. There are many such answered questions on here.
cardiac muscles/involuntary muscle
voluntary muscles and cardiac muscles
muscle tissue
Cardiac Muscle tissue =)
Animal tissue consisting predominantly of contractile cells is known as muscle tissue. These cells, called muscle fibers, have the ability to contract and generate force, allowing for movements in the body. Muscle tissue is categorized into three types: skeletal, cardiac, and smooth, each with its own unique features and functions.
Smooth cardiac muscle.
The heart does consist or atria, ventricles, etc. but these are the gross, anatomical divisions of the heart. In asking about the kinds of tissues contained in the heart, we have to think of the cells found there. The heart obviously contains cardiac muscle, it is practically the only site where it is found, except for the transitions between the heart and the large vessels arising from it. Cardiac muscle consist of the typical cardiac muscle cells, which are di-nucleated, branched cells which connect to each other at intercalated disks, making the heart muscle a functional syncitium. In addition, the heart contains modified cardiac muscle cells called Purkinje cells. These cells transmit electrical impulses to the ventricles, to stimulate them to contract. The heart also contains connective tissue, serving various purposes, such as binding groups of cardiac muscle cells into fascicles, etc.
Smooth muscle contains no striations whereas cardiac and skeletal muscles are striated.
The muscle cells which commonly branch are the cardiac muscle cells. The other muscles do not have any branched cells.