Red Blood Cell (Specialised Cell)
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Red blood cells
Main function is to transport oxygen around the body.
Erythrocytes
another name for red blood cells
Haemoglobin
protein molecule in red blood cells, It carries oxygen from other parts if the body and carbon dioxide back to the lungs
Narrow blood capillaries
they are flexible so they are able to squeeze through them
Features of a red blood cell
- membrane - Haemoglobin - bi-concaved surface (increases surface area to volume ratio) - no nucleus (increases space for the H molecules inside the cell to carry oxygen)