The percentage of blood volume occupied by erythrocytes is called the __________.

Ms. Wu, whose blood type is O−, requires a blood transfusion. Her family members volunteer to donate blood. Their blood types are as follows: her son, type B−; her husband, type B+; her daughter, type O+. Which family members could safely donate blood to Ms. Wu? Who could not? Explain.

Predict the effects of each of the following on systemic arterial blood pressure:

c. Blood loss from a bleeding ulcer

Plasma accounts for _____% of all blood, and water accounts for _____% of plasma.

The most numerous formed element in blood are the ____________, and their function is ____________.