You are performing a 12-lead ECG on a hospital patient using a portable ECG machine on a cart. As you are conducting the ECG, a red line appears at the bottom of the ECG graph paper. What should you do?

Which method of calculating the heart rate is shown below? 

On an ECG tracing, the period of time from the start of ventricular depolarization to the end of ventricular repolarization is the:

Depolarization of the cells causes the heart muscle to:

The most commonly used paper speed on the ECG machine is:

Cardiac dysrhythmias are:

What piece of equipment is the name of the Greek heavy infantry soldier or hoplite derived from?

What was the main weapon used by peltasts units?

Which hormone is made by kidney’s cells to regulate bone marrow’s RBC production? [a] Which hormone is enzymatically activated in the kidneys and regulates Ca2+ levels and bone density? [b]

List AND describe each of the three components of the filtration barrier in the kidney (Including the relative selectivity as well as specific structural components such as proteins is helpful for maximum credit):