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  2. Cardiac excitation-contraction coupling - Wikipedia

    en.wikipedia.org/wiki/Cardiac_excitation...

    The main pumps involved are: the sarcoplasmic reticulum Ca 2+-ATPase, which pumps Ca 2+ back into the SR, the Sarcolemmal sodium-calcium exchanger, which pumps one Ca 2+ out of the cell, in exchange for 3 sodium ions being pumped into the cell, the Sarcolemmal Ca 2+-ATPase, which uses ATP to pump Ca 2+ directly out of the cell and the ...

  3. Cardiac action potential - Wikipedia

    en.wikipedia.org/wiki/Cardiac_action_potential

    2 x 10 4:1 Although intracellular Ca 2+ content ... (see phase 2, below) and is a fundamental step in cardiac ... the fastest conduction pathway within the heart.

  4. Cardiac physiology - Wikipedia

    en.wikipedia.org/wiki/Cardiac_physiology

    Cardiac physiology or heart function is the study of healthy, unimpaired function of the heart: involving blood flow; myocardium structure; the electrical conduction system of the heart; the cardiac cycle and cardiac output and how these interact and depend on one another.

  5. Cardiac conduction system - Wikipedia

    en.wikipedia.org/wiki/Cardiac_conduction_system

    The cardiac conduction system (CCS, also called the electrical conduction system of the heart) [1] transmits the signals generated by the sinoatrial node – the heart's pacemaker, to cause the heart muscle to contract, and pump blood through the body's circulatory system.

  6. Are you neglecting your 'second heart'? 1 step to ... - AOL

    www.aol.com/news/neglecting-second-heart-1-step...

    The heart gets an assist from another pump in blood circulation. Called the "second heart," it only starts pumping when legs move. ... How to activate the ‘second heart’ with 1 step.

  7. Cardiac cycle - Wikipedia

    en.wikipedia.org/wiki/Cardiac_cycle

    In a healthy heart all activities and rests during each individual cardiac cycle, or heartbeat, are initiated and orchestrated by signals of the heart's electrical conduction system, which is the "wiring" of the heart that carries electrical impulses throughout the body of cardiomyocytes, the specialized muscle cells of the heart. [1] [2] These ...

  8. Doctors combine a pig kidney transplant and a heart device in ...

    www.aol.com/news/doctors-combine-pig-kidney...

    This week, the 54-year-old grasped a walker and took her first few steps. ... But while on dialysis, she didn't qualify for a heart pump, called a left ventricular assist device or LVAD, either.

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