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Biol 431 Exam 1 Questions and Answers
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Biol 431 Exam 1 Questions and Answers
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Biol 431 Exam 1 Questions and Answersblood (hematology) - Answer-study of blood
Blood Functions - Answer-transportation, regulation, protection
Blood composition - Answer-55% plasma, 45% formed elements, 1% buffy coat
Plasma - Answer-Fluid portion of blood 55%
contains plasma proteins
albumins ( transport protein)
globulins ( IgG antibodies)
Fibrinogenis (clotting factors)
serum - Answer-plasma without clotting factors (fibrinogen)
Formed elements of blood - Answer-erythrocytes, leukocytes, platelets
Hematocrit - Answer-percentage of blood volume occupied by red blood cells
normal HCT is 45
Anemia - Answer-Low HTC ( less than 35%)
lack of a normal number of red blood cells
caused by: Symptoms-
-iron deficiency - Fatigue due to lack of
-sickle cell anemia transport function
-hemolytic anemia
-hemorronagic anemia
polycythemia - Answer-High HTC (more than 55%)
excess of red blood cells
Caused by: Symptoms-
- decreased O2 level - Blood is very thick
- high altitude (high viscosity) difficult for
-resp. issues difficult for heart to pump
- smoking adequately may lead to CHF
hemopoiesis (hematopoiesis) - Answer-formation of blood cells
Main site: red bone marrow
which contains pluripotent stem cells ( hemocytoblast)
pluripotent stem cells -----> - Answer-Myeloid stem cells and Lymphoid stem cells
reticulocyte---> erythrocytes WBC's: Lymphocytes
megakaryocyte--> platelets
{Monocytes T Cells
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