Unit 10 Review Chapter 10 - Blood - Anatomy And Physiology Test With Answers Page 2
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Monocyte
Yes
Agranulocyte
Largest of the white blood
(Phagocytic)
cells
Function as macrophages
Important in fighting
chronic infection
Lymphocyte
Yes
Agranulocyte
Nucleus fills most of the
cell
Play an important role in
the immune response
Platelets
No
Derived from ruptured
multinucleate cells
(megakaryocytes)
Needed for the clotting
process
Normal platelet count =
3
300,000/mm
5. What is erythropoietin? Where does it come from? What triggers its release?
A hormones that stimulates the formation of blood cells, it is released mostly by the kidneys in response to
low oxygen levels in the bloodstream.
6. What type of cell does an erythrocyte originate from? What are these cells called?
Stem cells (hematocytoblast)
7. What are the physical characteristics of erythrocytes?
Anucleate; biconcave disk; no nucleus or organelles; round, oval shape, contain iron heme groups and
hemoglobin to carry oxygen.
8. What type of atom does a hemoglobin protein possess?
An iron atom
9. How long do RBCs live?
90-120 days
10. How many oxygen molecules can one hemoglobin molecule hold?
4 oxygen molecules
11. How many hemoglobin molecules are found in one red blood cell?
250 million, so there are about a billion oxygen molecules for every RBC
12. Which WBCs congregate at the site of an allergic reaction?
Eosinophils
13. Which leukocyte is most abundant?
Neutrophils
14. Which agranulocyte is most abundant?
Lymphocyte
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