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Normal hematocrit levels are generally 38.5 – 49.0 for people living at sea level.  Which hematocrit level would you expect to find in a resident of La Rinconada, Peru (elevation 16,830 feet–the highest city in the world)?

Please note: I write questions about aliens so I can test your understanding of concepts without necessarily using human examples which you have already seen (and thus could memorize without understanding the principle).  As such, the next few questions are designed to test your understanding of feedback mechanisms, not your understanding of sperm production in human males :). Male aliens on Aleraan produce sperm in response to levels of a hormone known as duranomine.  When duranomine levels increase, sperm production dereases.  And when duranomine levels decrease sperm production increases.  This is an example of:

Put the structures in the order that action potentials take through them in the Intrinsic Conduction System:

Diastole is: 

In order to maintain receptor exposure, if kVp decreases by 15%, what must happen to mAs?

You have just had a scare and your cardiac output has increased.  Which of these is the most likely reason why?

Which circuit has the role of adding oxygen to highly deoxygenated blood?

Skeletal muscle has a longer absolute refractory period than cardiac muscle

Smooth muscle is found in which layer of a blood vessel wall?

The last step in hemostasis is: