32. Positive chemotaxis is a feedback system that signals leukocyte migration into damaged areas.

10.  Which two factors below make rapid and substantial blood loss life threatening?        

31. Each hemoglobin molecule can transport two molecules of oxygen.

16.  A patient with type A positive blood can, in theory, safely donate blood to someone with ________ blood.        

14. Which of the following might trigger erythropoiesis?        

11.  What is the average normal pH range of blood?        

7.  With a patient who is administered an injection of colony stimulating factor (CSF), you would expect to see ________.        

30. Myeloid stem cells give rise to all leukocytes.  

29. Hemoglobin is made up of the protein heme and the red pigment globin.

8. People that have a single allele (gene copy) for sickle cell anemia are typically not sick from the disease and are said to be carriers of sickle cell trait. These people will more often live in the malaria belt of sub-Saharan Africa. The most likely explanation for this is ________.