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The myocardial conducting cells (1 percent of the cells) are generally much smaller than the contractile cells and have fewer myofibrils for contraction. Myocardial conducting cells are specialized to initiate and propagate the electrical activity that travels throughout the heart and triggers the contractions of the myocardial contractile cells that propel the blood.
- Heart Anatomy
The muscle pattern is elegant and complex, as the muscle...
- Coronary Circulation
Myocardial infarction (MI) is the formal term for what is...
- Heart Anatomy
May 13, 2022 · Cardiac muscle cells branch freely. A junction between two adjoining cells is marked by a critical structure called an intercalated disc, which helps support the synchronized contraction of the muscle (Figure 19.2.1 19.2. 1.b). The sarcolemmas from adjacent cells bind together at the intercalated discs.
Cardiac muscle cells branch freely. A junction between two adjoining cells is marked by a critical structure called an intercalated disc, which helps support the synchronized contraction of the muscle (Figure 19.2.1 b). The sarcolemmas from adjacent cells bind together at the intercalated discs.
- Lindsay M. Biga, Sierra Dawson, Amy Harwell, Robin Hopkins, Joel Kaufmann, Mike LeMaster, Philip Mat...
- 2019
Aug 17, 2023 · The cardiac conduction system is a network of specialized cardiac muscle cells that initiate and transmit the electrical impulses responsible for the coordinated contractions of each cardiac cycle. These special cells are able to generate an action potential on their own (self-excitation) and pass it on to other nearby cells (conduction ...
Jul 30, 2023 · Introduction. Cardiac muscle also called the myocardium, is one of three major categories of muscles found within the human body, along with smooth muscle and skeletal muscle. Cardiac muscle, like skeletal muscle, is made up of sarcomeres that allow for contractility. However, unlike skeletal muscle, cardiac muscle is under involuntary control.
- 2023/07/30
The heart is a biomechanical pump at the centre of our circulatory system. It contracts rhythmically from approximately 6 weeks of gestational age until death.1 Contractions are initiated by action potentials, arising from pacemaker cells, transmitted to individual cardiomyocytes via specialised conduction pathways, through intercalated discs and gap junctions between cells.2 The arrival of ...
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There are two major types of cardiac muscle cells: myocardial contractile cells and myocardial conducting cells. The myocardial contractile cells constitute the bulk (99 percent) of the cells in the atria and ventricles. Contractile cells conduct impulses and are responsible for contractions that pump blood through the body. The myocardial ...
