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Aug 8, 2023 · Cardiac muscle (or myocardium) makes up the thick middle layer of the heart. It is one of three types of muscle in the body, along with skeletal and smooth muscle. The myocardium is surrounded by a thin outer layer called the epicardium (AKA visceral pericardium) and an inner endocardium. Coronary arteries supply to the cardiac muscle, and cardiac veins drain this blood. Cardiomyocytes are the ...
- Anthony Saxton, Muhammad Ali Tariq, Bruno Bordoni
- 2023/08/08
- 2018
Jul 30, 2023 · The pathophysiology of cardiac muscle is based on damage to cardiac muscle cells, leading to inappropriate contractility. Cardiomyopathy: A cardiomyopathy is a genetic or acquired disorder of the myocardium associated with cardiac dysfunction. According to the World Health Organization, there exist five main categories of non-ischemic ...
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
Nov 23, 2022 · Cardiac muscle tissue, also known as myocardium, is a structurally and functionally unique subtype of muscle tissue located in the heart, that actually has characteristics from both skeletal and muscle tissues. It is capable of strong, continuous, and rhythmic contractions that are automatically generated. The contractility can be altered by ...
- Medical Content
- 14 min
Feb 24, 2023 · Cardiac muscle fibers cells also are extensively branched and are connected to one another at their ends by intercalated discs. An intercalated disc allows the cardiac muscle cells to contract in a wave-like pattern so that the heart can work as a pump. Figure 10.8.1 10.8. 1: Cardiac Muscle Tissue Cardiac muscle tissue is only found in the heart.
Jul 6, 2024 · The sarcomere stands as the fundamental unit of muscle contraction within the cardiac muscle, giving it its striated appearance. These repeating units are delineated by Z-discs, which anchor the thin filaments composed of actin. The organization within the sarcomere is highly structured, enabling efficient and powerful contractions.
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Jul 30, 2022 · Similar to skeletal muscle, cardiac muscle is striated and organized into sarcomeres, possessing the same banding organization as skeletal muscle (Figure 1). However, cardiac muscle fibers are shorter than skeletal muscle fibers and usually contain only one nucleus, which is located in the central region of the cell.
