What are segments of the walls of the Heart?

Answer 1

The walls of the heart are made up of three layers of cardiac muscle called epicardium, myocardium, and endocardium. These muscle layers are made up of different things.

The outermost layer is the thin epicardium muscular covering of the heart. This layer is made up of mostly connective tissue and fat.

The inside layer is a thick layer of muscle called the myocardium which is made up of cardiomyocytes, excitable cells that can propagate quickly and can spread their action potentials to surrounding cells. Each cell can physically contract to make the heart muscle shorten. This is the largest layer and accounts for about 80% of the heart.

The inner lining muscle layer of the heart is a smooth membrane called endocardium. It is made up of endothelial cells just like the linings of the blood vessels.

Answer 2

The heart wall is composed of three layers-outermost epicardium, middle myocardium and innermost endocardium. The epicardiumis the thin mesodermal serous membrane representing the visceral layer of peritoneum of pericardial cavity. The endocardiumis also a thin epithelial, but endodermal, membrane. It is reinforced by some smooth muscle fibres and possesses many blood vessels. It lines the cavities of heart chambers and covers their partitions, various valves and other internal structures. The myocardium forms the remaining bulk of the heart wall between epicardium and endocardium. It is composed of branched and striated, yet involuntary cardiac muscleswhich contract and relax rhythmically at a fixed rate throughout life without fatigue. Each cycle of contraction and relaxation of these muscles constitutes a heartbeat.

Answer 3

Pericardium(outer layer), myocardium (middle), endocardium (inner)

Answer 4

The walls of the heart are made from an epithelial tissue.The walls of the heart are made from an epithelial tissue.

Answer 5

Muscles.Hear has three walls,endomcardium,myocardium,pericardium with all three has different components.

Answer 6

Cardiac muscle and an important nerve plexus, called the ventricular bundle, which conducts nerve impulses from the AV node through the heart to control speed and strength of each heartbeat.

Answer 7

The wall of the heart are made up of paricadium,it contains fluids to reduce friction as the heart pumps continuously

Answer 8

Either...

muscle/muscle tissue

or cardiac muscle/cardiovascular muscle but all of theses should be correct