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BIO 169 Blood (Answered) Exam Questions and Correct Answers. 70 Q&A. 100%.
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BIO 169 Blood (Answered) Exam Questions and Correct Answers. 70 Q&A. 100%.
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BIO 169 Blood (Answered) ExamQuestions and Correct Answers. 70
Q&A. 100%.
What is blood composed of?
red blood cells, white blood cells, platelets, plasma
Percentage of plasma in blood
55%
percentage of red blood cells
45%
percentage of white blood cells and platelets
1%
average hematocrit
45%
composition of plasma
92% water
7% proteins
1% other solutes
Function of RBC
transport oxygen and carbon dioxide
Function of WBC
fight infection
function of platelets
blood clotting
Composition of RBC
Four heme groups
Globin
Four Iron ions
role of EPO
, initiates and stimulates the production of RBCs
what triggers RBC production?
Erythropoietin --> which responds to low O2 (relative hypoxia)
What is erythropoiesis?
production of red blood cells
hemorrhagic anemia
caused by blood loss
Chronic hemorrhagic anemia
Slow, constant loss from ulcers or hemorrhoids.
iron deficiency anemia
anemia caused by inadequate iron intake
pernicious anemia
lack of mature erythrocytes caused by inability to absorb vitamin B12 into the bloodstream
renal anemia
Lack of EPO
Often accompanies renal disease
Treated with synthetic EPO
aplastic anemia
failure of blood cell production in the bone marrow
Thalassemia
inherited defect in ability to produce hemoglobin, leading to hypochromia
sickle cell anemia
a genetic disorder that causes abnormal hemoglobin, resulting in some red blood cells assuming an
abnormal sickle shape
polycythemia vera
general increase in red blood cells
secondary polycythemia
from dehydration, emphysema, high altitude, or physical conditioning
Granulocytes
neutrophils, eosinophils, basophils
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