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- Cardiac muscle tissue, or myocardium, contains cells that expand and contract in response to electrical impulses from the nervous system. These cardiac cells work together to produce the rhythmic, wave-like contractions that is the heartbeat.
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The myocardium pumps blood to the body tissues to deliver what necessary substance? Study with Quizlet and memorize flashcards containing terms like The myocardium is made up of what type of muscle?, Which condition is caused by an enlargement of the heart muscle?, Cardiac muscle has which special characteristic? and more.
- Function of Myocardium Flashcards
Primary function of the myocardium is to generate force...
- Function of Myocardium Flashcards
Oct 11, 2024 · Primary function of the myocardium is to generate force necessary to circulate blood through the body. Blood is pumped by the heart and circulated through the body using specific circuits to transport O2, nutrients, CO2 and wastes within the body and to deliver blood to the lungs for gas exchange.
Study with Quizlet and memorize flashcards containing terms like Which condition is caused by an enlargement of the heart muscle?, Which structures are responsible for using calcium to start the conduction cycle of the heart?, The myocardium is made up of what type of muscle? and more.
Oct 30, 2023 · The main function of the myocardium is to facilitate the contraction and relaxation of the heart walls in order to receive and pump the blood into the systemic circulation. In addition, the myocardial cells provide a scaffold for heart chambers and conduct electrical stimuli.
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- Dilated Cardiomyopathy
- Hypertrophic Cardiomyopathy
- Restrictive Cardiomyopathy
- Arrhythmogenic Right Ventricular Dysplasia
- Transthyretin Amyloid Cardiomyopathy
Dilated cardiomyopathy causes the cardiac muscle tissue of the left ventricle to stretch and the heart’s chambers to dilate.
Hypertrophic cardiomyopathy (HCM) is a genetic condition in which the cardiomyocytes are not arranged in a coordinated fashion and are instead disorganized. HCM can interrupt blood flow out of the ventricles, cause arrhythmias (abnormal electrical rhythms), or lead to congestive heart failure.
Restrictive cardiomyopathy (RCM) refers to when the walls of the ventricles become stiff. When this happens, the ventricles cannot relax enough to fill with an adequate amount of blood.
This rare form of cardiomyopathy causes fatty infiltration in cardiac muscle tissue in the right ventricle.
Transthyretin amyloid cardiomyopathy (ATTR-CM) develops when amyloid proteins collect and form deposits in the walls of the left ventricle. The amyloid deposits cause the ventricle’s walls to stiffen, which prevents the ventricle from filling with blood and reduces its ability to pump blood out of the heart. This is a form of RCM.
Jun 22, 2024 · The myocardium is responsible for the contractile function of the cardiac pump. Composed of cardiomyocytes, the heart muscle has distinctive cellular and physiological features, allowing it to generate force to maintain adequate tissue and organ perfusion throughout the body.
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The middle and thickest layer is the myocardium, made largely of cardiac muscle cells along with the blood vessels that supply the myocardium and the nerve fibers that help regulate the heart. It is built upon a framework of dense connective tissue called the cardiac skeleton (covered in detail later in this section).
