The accounting system that is the easiest to use in the medical office would be the pegboard or the write-it-once system. This is because it reduces the chance of err and saves time when it comes to listing the transactions. Also, it does not require much accounting knowledge and is perfect for easy monitoring of accounts.
True the heart like any muscle strengthens when you use it
At the onset of a muscle contraction, the presence of calcium triggers the opening of the Na-K channels in the membrane. Potassium is a calcium inhibitor, so as the potassium flows out of the cell, it eventually reduces the presence of calcium. This causes the closure of the Na-K channel (negative feedback mechanism). In a hypokalemic state, the lack of sufficient K doesn't inhibit the calcium channel, and in turn doesn't properly terminate the muscle contraction at the cellular level.
All except for D, that could be very damaging
