Which term indicates abnormally low potassium concentration in the blood?

The abbreviation MRSA means

A patient comes to the hospital with severe cramping.  A routine blood test determines that he has an elevated potassium level.  This elevated potassium level may have which effects on cardiac output?

Baroreceptor releaxes may be triggered by receptors found in the wall of which of the following blood vessels?

During which phase of the cardiac cycle does the tricuspid valve open?

To assist with venous return, muscles of the lower extremity contract which pushes blood proximally up through valves into large veins near the heart.  This mechanism is called the:  

Which organ detects hypoxia and releases a hormone that stimulates the red bone marrow to produce red blood cells?

Which type of blood stem cell of the red bone marrow will have both a nucleus and organelles?  

At a normal resting heart rate, most of the total volume of blood in the body is located in which of the following areas?    

Which type of blood would a person have if they have: A antigens on their RBCs anti-B-antibodies in their plasma Rh antigens on their RBC no Rh antibodies in their plasma