Calcium ions play an important role in cardiac muscle physiology. Calcium ions influx is responsible for plateau phase after depolarization. Calcium ions also play role in muscle contraction with the help of troponin (regulatory protein).

For contraction, about 20 percent of calcium ions are supplied from outside of the cell, while rest of the calcium ions are released from SR (sarcoplasmic reticulum).

Thus, the correct answer is 'forth option.'

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3 years ago

Sofia has identified a current responsibility she is struggling with. Now that the responsibility has been identified, what is t

Marat540 [252]

Identifying specific actions to take

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2 years ago

Elizabeth is 20 weeks pregnant with her second child. Her blood type is AB negative. Her obstetrician is concerned about the pos

zimovet [89]

RHo(D) immune globulin can cause an abnormal breakdown of red blood cells. This effect can lead to life threatening blood clots or organ failure

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