Intercalated disc b nucleus of cardiac fiber c striations d cardiac muscle fiber describe the unique anatomical features of cardiac muscle what role does the unique structure of cardiac muscle play in its function. Cardiac muscle is an involuntary striated muscle tissue found only in this organ and responsible for the ability of the heart to pump blood the structure of the heart can vary among the different branches of the animal kingdom.
Cardiac muscle is a type of involuntary muscle found only in the walls of the heart, specifically the myocardium cardiac muscles contract automatically to tighten the walls of the heart in a rhythmic fashion (pp212-216.
Essay: what is heart disease by: kristy haugen dilated cardiomyopathy is enlargement and stretching of the cardiac muscle hypertrophic cardiomyopathy causes thickening of the heart muscle restrictive cardiomyopathy causes the ventricles of the heart to become excessively rigid causing blood flow to the ventricles to be difficult between. Coronary artery disease or cad is the most common type of heart disease and the leading cause of death in both genders in the us coronary artery disease affects the arteries supplying blood to the heart muscle.
Describe the unique anatomical features of cardiac muscle what role does the unique structure of cardiac muscle play in its function dissection of the sheep heart. Cardiac muscle definition cardiac muscle is responsible for pumping blood throughout the body it is a type of muscle tissue that is found only in the heart and is distinguishable from the two other forms of muscle, smooth muscle that moves internal organs, such as the bowels, and vessels, such as the artery walls and skeletal muscle (that powers joints. The heart is composed of cardiac muscle which enable the heart to contract and allow the synchronization of the heart beat the heart wall is divided into three layers: the epicardium, myocardium, and endocardium.
Cardiac muscle tissue is only found in the heart highly coordinated contractions of cardiac muscle pump blood into the vessels of the circulatory system similar to skeletal muscle, cardiac muscle is striated and organized into sarcomeres, possessing the same banding organization as skeletal muscle ( figure 1 . Case studies on cardiac function essay case studies on cardiac function case 1 ao is an 89-year-old woman with a long history of systolic heart failure secondary to a large left ventricular infarct when she was in her 70s.
Describe the structure of cardiac muscle even though cardiac muscle has autorhythmicity, heart rate is modulated by the endocrine and nervous systems there are two major types of cardiac muscle cells: myocardial contractile cells and myocardial conducting cells. Cardiac muscles are an involuntarily contracting, striated muscle found exclusively in the walls of the heart, more specifically in the myocardium contraction of cardiac muscles propel oxygenated blood into the circulatory system to deliver oxygen to the body, as well as regulates blood pressure (martini et al, 2009.
The myocardium is the middle layer of the heart and is composed of specialised muscle tissue called as the cardiac muscle, on which the circulation of blood depends it varies in thickness, being thickest in the left ventricle, thinner in the right ventricle and thinnest in the artrium.