Cardiac muscle, in vertebrates, one of three major muscle types, found only in the heart. Cardiac muscle possesses contractile units known as sarcomeres and exhibits rhythmic contractions. The rhythmic …

Cardiac muscle (also called heart muscle or myocardium) is one of three types of vertebrate muscle tissues, the others being skeletal muscle and smooth muscle. It is an involuntary, striated muscle …

Oct 4, 2019 · Cardiac muscle, also known as heart muscle, is the layer of muscle tissue which lies between the endocardium and epicardium. These inner and outer layers of the heart, respectively, …

Jul 30, 2023 · 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 …

Cardiomyocytes are primarily involved in the contractile function of the heart that enables the heart to pump blood around the body.

Aug 23, 2025 · Anatomical Overview of Cardiac Muscle Cells The cardiac muscle cell’s structure is tailored for its relentless pumping role. This diagram and photomicrograph reveal the cellular …

The cardiac muscle cells have a much different action potential. In this case, there is a rapid depolarization, followed by a brief repolarization and plateau phases, ending with a full repolarization.

Cardiac Muscle Cells This is a high power view of cardiac muscle cells. Like smooth muscle, each cardiac muscle cell has a single (sometimes two) centrally located nucleus. Like skeletal muscle, …

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.

Figure 19.2.1 – Cardiac Muscle: (a) Cardiac muscle cells have myofibrils composed of myofilaments arranged in sarcomeres, T tubules to transmit the impulse from the sarcolemma to the interior of the …