This question may have more than one correct answer.  Choose all that apply.  Which of the following structures would contain deoxygenated blood.  

What clotting factor is necessary for fibrin accumulation?  Without it, clotting would not happen.  

Which of the following would have the lowest blood pressure?  

Parathyroid hormone is released when blood calcium levels decrease. This is an example of control by __________ stimuli.

If a person is anemic, they would have a _________ viscosity and ___________ resistance to flow.

Leukocytes are mainly differentiated by: 

This hormone acts on angiotensinogen to convert it to Ang I:

Granulocytes called basophils are phagocytic and the most numerous of all leukocytes.  

The “pacemaker” of the heart is the

Which of the following is a semilunar valve?