15) How do “funny” currents contribute to the self-excitatory nature of cardiac pacemaker cells?   

1) To maintain consistent blood flow, how does a vascular bed respond to temporary elevation in mean arterial pressure?

24) What is the correct rate for this rhythm? (3 second hashmarks are in bright pink and at the bottom of the strip, in this example). 

14) The initial depolarization of the cardiac muscle cell (phase 0) is in part due to the rapid and short-duration influx of what ion?

What would be the data type of info of the following code? ‘>>>’ indicates a new line.  >>> f = open(‘input.txt’, ‘r’) >>> info = f.readlines() >>> f.close()

11) What two factors primarily determine lymph flow?

What does the dictionary method values() return?

22) How does parasympathetic stimulation of the vagi nerves impact the activity of the sinoatrial and atrioventricular nodes?

19) No. 3 in figure____________

The correct way to remove an item from dictionary d is: