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HEMATOPOIETIC SYSTEM EXAM QUESTIONS AND ANSWERS LATEST UPDATED
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HEMATOPOIETIC SYSTEM EXAM QUESTIONS AND ANSWERS LATEST UPDATED...
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HEMATOPOIETIC SYSTEM EXAM QUESTIONS ANDANSWERS LATEST UPDATED
What are the different components of blood and what percentage do they make up?
- ANSWER 1. Plasma (55%)
2. Leukocytes & Platelets (<1%) referred to as Buffy coat
3. Erythrocytes (45%)
What are the major types of plasma proteins? - ANSWER 1. Albumin (54%)
2. globulins (38%)
- alpha (alpha steroid and bilirubin transport)
- beta (iron and copper transport)
- gamma (antibodies)
3. fibrinogen (7%) clotting
What are the various functions of the plasma? - ANSWER 1. Prevent blood loss
2. Carries RBCs that transport gases
3. Aids in body defences (gamma globulins)
4. Transport nutrients, waste products, hormones
5. Facilitates exchange of body heat
Where are blood cells formed in the fetus? - ANSWER Liver, spleen, and blood
vessels
Where are blood cells formed? - ANSWER Bone marrow - flat bones of the pelvis,
sternum, ribs, & vertebral bodies
, Some in the liver and spleen
How is hematopoiesis regulated? - ANSWER cytokines (hormone-like growth
factors) stimulate proliferation, differentiation, and functional activation in bone
marrow
What components are measured in a CBC? - ANSWER 1. RBC
2. WBC (differential)
3. Platelets
What are the 3 main categories of WBCs? - ANSWER 1. Granulocytes
(Neutrophils, Eosinophils, Basophils)
2. Lymphocytes
3. Monocytes
What does the erythrocyte sedimentation rate measure? - ANSWER Rate at which
RBCs fall in anti-coagulated blood
-plasma proteins and fibrinogen promote RBC aggregation and increase the
sedimentation rate
What can cause an increased Erythrocyte sedimentation rate? - ANSWER infection
inflammatory diseases (Rheumatoid arthritis & lupus)
blood cancers
metastasized cancers
Describe how a bone biopsy is performed and why it is done. - ANSWER Needle is
inserted into marrow cavity (usually iliac crest) and marrow is aspirated. Used to
determine types of cells present. (gives an idea of what is going on)
What is hemostasis? - ANSWER stoppage of blood flow
What are the 5 stages of hemostasis? - ANSWER 1. Vessel spasm
2. Formation of platelet plug
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