11) Leukocytosis most likely indicates:

A) bone marrow cancer

B) bacterial or viral infection

C) low WBC count

D) excess RBCs

E) life at a higher altitude

12) Which one of the following cells are classified as granulocytes:

A) neutrophils, eosinophils, and basophils

B) lymphocytes and monocytes

C) eosinophils and monocytes

D) basophils and eosinophils

E) neutrophils, lymphocytes, and eosinophils

13) Which type of granulocyte produces histamine during the inflammatory response:

A) eosinophils

B) basophils

C) neutrophils

D) lymphocytes

E) monocytes

14) The most numerous white blood cells are the:

A) lymphocytes

B) neutrophils

C) eosinophils

D) monocytes

E) basophils

15) Which type of leukocyte contains heparin, an anticoagulant:

A) neutrophil

B) monocyte

C) lymphocyte

D) basophil

E) eosinophil

16) The type of leukocytes that become macrophages in the tissues are:

A) neutrophils

B) eosinophils

C) basophils

D) lymphocytes

E) monocytes

17) Platelets are fragments of multinucleate cells called:

A) erythrocytes

B) eosinophils

C) basophils

D) megakaryocytes

E) macrophages

18) Where does hematopoiesis produce new red blood cells:

A) yellow bone marrow

B) articular cartilage

C) red bone marrow

D) epiphyseal line

E) synovial membrane

19) Erythropoeitin is a hormone produced by the kidneys in response to low levels of:

A) oxygen

B) carbon dioxide

C) erythrocytes

D) leukocytes

E) platelets

20) The average functional lifespan of an RBC is:

A) 20-30 days

B) 50-75 days

C) 100-120 days

D) one year

E) the body’s lifetime