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SCN1111 - 7, Blood Study Set Exam
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SCN1111 - 7, Blood Study Set ExamWhat type of tissue is blood? - Answer connective tissue
What are the functions of blood? - Answer distribution (O2, waste, hormones, nutrients),
regulation (pH, temp, fluid), protection (clotting, immunity)
main 2 components of blood - Answer plasma and formed elements
Describe plasma - Answer The matrix of blood
90% water
over 100 dissolved solutes eg: proteins, gases, enzymes, antigens, hormones, nutrients
etc.
What composes the formed elements? - Answer erythrocytes, leukocytes, thrombocytes
Describe erythrocytes - Answer 7.5um in diameter
biconcave, flattened
bound by plasma membrane
no nucleus or organelles
lots of haemoglobin
cannot reproduce
main function = gas transport
Where are erythrocytes formed? - Answer red bone marrow
What is the developmental pathway of an erythrocyte? - Answer haemocytoblast (stem
cell)
proerythroblast (committed cell)
early erythroblast (phase 1, ribosome synthesis)
late erythroblast (phase 1)
normoblast (phase 2, haemoglobin accumulation)
reticulocyte (phase 3, ejection of nucleus)
erythrocyte
What is the hormone involved in erythrocyte production? - Answer erythropoietin
What are the 2 types of leukocytes? - Answer granulocytes and agranulocytes
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