
Cardiac muscle | Definition, Function, & Structure | Britannica
The heart consists mostly of cardiac muscle cells (or myocardium). The outstanding characteristics of the action of the heart are its contractility, which is the basis for its pumping action, and the …
Cardiac Muscle - Definition, Function and Structure | Biology Dictionary
Oct 4, 2019 · Cardiac muscle exists only within the heart of animals. It is a specialized form of muscle evolved to continuously and repeatedly contract, providing circulation of blood throughout the body.
Cardiac Muscle Tissue: Function, Structure, Conditions, and Pictures
Apr 4, 2018 · Cardiac muscle tissue is only found in your heart. It performs involuntary, coordinated contractions that allow your heart to pump blood through your circulatory system.
Cardiac muscle - Wikipedia
Cardiac muscle cells (also called cardiomyocytes) are the contractile myocytes of the cardiac muscle. The cells are surrounded by an extracellular matrix produced by supporting fibroblast cells. …
Cardiac muscle tissue: Definition, function, and structure
Feb 5, 2025 · Cardiac muscle tissue, or myocardium, is a type of muscle tissue that forms the heart. It contracts and releases involuntarily and keeps the heart pumping blood around the body.
Cardiac Muscle: Function, Structure, and Health
Jul 20, 2025 · Cardiac muscle, also called the myocardium, is the tissue that forms the walls of the heart. The continuous work of this muscle is fundamental to circulating blood, oxygen, and nutrients …
Cardiac Muscle: Function, Structure, and Health Tips
Jul 15, 2025 · The cardiac muscle performs an incredibly vital and remarkable function. It makes use of rhythmic contraction to move blood, oxygen, and nutrients into each individual cell and take out …
7.4 Cardiac Muscle – General Anatomy & Physiology
Cardiac muscle is an involuntary muscle that forms the walls of the heart. The cells of cardiac muscle, known as cardiomyocytes, are striated and they contain sarcomeres. The fibers are shorter than …
Understanding Cardiac Muscle Function: The Heart's Unique …
Nov 29, 2025 · Cardiac muscle, found exclusively in the heart, is a specialized type of striated muscle tissue uniquely adapted to perform continuous, rhythmic contractions essential for pumping blood …
19.2 Cardiac Muscle and Electrical Activity
Contractions of the heart (heartbeats) are controlled by specialized cardiac muscle cells called pacemaker cells that directly control heart rate. This property is known as autorhythmicity. Neither …