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extra credit: Fill in the blank: What arrhythmia is shown in the figure above? 

Use the dropdown lists to fill in the following blanks:  Identify which of the following will cause an increase in cardiac output: [1] end diastolic volume [2] end systolic volume [3] preload

Why does heart rate increase to abnormally high values in a patient with mitral valve prolapse?

If the atria DO NOT contract in the cardiac cycle, with what percentage of blood will the ventricles fill (consider a ventricle completely filled with blood at 100% full)? 

Which of the following is a measurement of the proportion of red blood cells (or all blood cells) per volume of whole blood?

  The phase of the cardiac cycle shown in the figure above is (LOOK at the figure and what’s going on. Don’t overthink this!)

The amount/volume of blood in the ventricle at the end of the ventricular filling phase of the cardiac cycle is the

Red blood cells are disc (donut) shaped cells (shown cut in half in the figure above for reference). This specific characteristic allows red blood cells to carry out which of the following major functions?

What is the function of papillary muscles in the heart (the figure above is JUST for reference to look at and think through this question)?

Which of the following cells are large, phagocytic white blood cells that differentiate to macrophages in response to the introduction of a foreign pathogen?