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Red Blood Cells

Terms in this set (9)

Red blood cells size and shape
8 microns diameter, biconcave shape (increases surface area/volume ratio
RBC structure
flexible plasma membrane for narrow passages
no nucleus or other organelles - no cell division or mitochondrial ATP formation
RBC surface antigens
AB antigens
Haemoglobin is
oxygen carrying protein in cytosol that gives blood it's red colour. 1/3 cell's weight is haemoglobin.
Normal RBC count
Male - 5.4million/L
Female - 4.8million/microL
New blood cells enter circulation at 2 million/second
Haematocrit/Packed Cell Volume (PCV) is
percentage of blood occupied by RBC
Haematocrit/PCV normal range
Female - 38-46% (av. 42%) - varies due to menstrual flow
Male - 40-50% (av. 46%) - increased by testosterone
Haematocrit/PVC abnormal states
Anaemia - umbrella term, there are various types - not enough RBC's or not enough haemoglobin
Polycythaemia - too many RBCs (over 65%) - can cause dehydration, tissue hypoxia, i.e.blood doping in athletes
Blood Doping in athletes is when
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