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  1. 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. Terminology. English: Myocardium.

    • Pericardium

      Between the layers is the pericardial cavity, a potential...

  2. The brain controls the heart directly through the sympathetic and parasympathetic branches of the autonomic nervous system, which consists of multi-synaptic pathways from myocardial cells back to peripheral ganglionic neurons and further to central preganglionic and premotor neurons.

    • Alessandro Silvani, Giovanna Calandra-Buonaura, Roger A. L. Dampney, Pietro Cortelli
    • 2016
  3. 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
  4. Jun 21, 2019 · Cardiac muscle tissue, or myocardium, is a type of muscle tissue that forms the heart. Cardiac muscle tissue contracts and releases involuntarily. It is responsible for keeping the heart pumping ...

  5. Jul 3, 2007 · Neurocardiology has many dimensions, but it may be conceptualized as divided into 3 major categories: the heart’s effects on the brain (eg, cardiac source embolic stroke), the brain’s effects on the heart (eg, neurogenic heart disease), and neurocardiac syndromes (eg, Friedreich disease). The present review deals with the nervous system’s ...

    • Martin A. Samuels
    • 2007
  6. Dec 8, 2023 · Abstract. Cardiac output is controlled by the autonomic nervous system to meet continually changing demands for the perfusion of systemic vascular beds. Dysfunction of autonomic control can contribute to a range of cardiopathies; conversely, robust autonomic function can help maintain a failing myocardium as heart diseases progress.

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  8. 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.

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