Blood

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Erythrocytes: 7um
Red blood cells. Biconcave shape, small and flexible, no nucleus so packed with haemoglobin. Function: Transport O2 and CO2 in reversible reactions. Large surface area where gases diffuse quickly. Easily changes shape and squeezes through capillaries
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Platelets
Small amounts of cytoplasm and membrane with no nucleus. Fragments of megakaryocte cells. Function: release blood clotting factors on damage.
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Leucocyte
White blood cell involved in the body defence
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Neutrophil: 9um
Type of leucocyte. Small granules in cytoplasm and lobed nucleus. Function: engulfs microbes by phagocytosis.
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Lymphocytes: 5.5um
Type of leucocyte. Vert large nucleus and little cytoplasm. B lymphocytes: produce antibodies. T lymphocyte: destroy infected cells.
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Monocytes: 13-20um
Type of leucocyte. Large cells with bean shipped nucleus. Function: become macrophages after 3 days in blood system.
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Macrophages: 15-20um
Type of leucocyte. Large phagocytic cells in blood but also fixed to specific tissues e.g. lung and liver. Function" engulf microbes and foreign cells in tissue.
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Magnification
size of structure in the picture / real size of the structure
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Real size
size of structure in the picture/ magnification
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Micrometre
on millionth of a metre and one thousandth of a centimetre. Always measure structure in mm to convert to micrometers by multiplying by 1000.
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Other cards in this set

Card 2

Front

Small amounts of cytoplasm and membrane with no nucleus. Fragments of megakaryocte cells. Function: release blood clotting factors on damage.

Back

Platelets

Card 3

Front

White blood cell involved in the body defence

Back

Preview of the back of card 3

Card 4

Front

Type of leucocyte. Small granules in cytoplasm and lobed nucleus. Function: engulfs microbes by phagocytosis.

Back

Preview of the back of card 4

Card 5

Front

Type of leucocyte. Vert large nucleus and little cytoplasm. B lymphocytes: produce antibodies. T lymphocyte: destroy infected cells.

Back

Preview of the back of card 5
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