Why are blood cells thin?

Thin blood is known as thrombocytopenia and is caused by low numbers of platelets. The normal level of platelets in the blood is between 150,000–400,000 per milliliter (mL). If levels of platelets fall below 150,000/mL, it may indicate thin blood.

Explanation:

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Red blood cells have very thin cell membranes – this lets oxygen diffuse through quickly. The cells themselves are thin, so there is only a short distance for the oxygen to diffuse to reach the centre of the cell.

answer; i believe the correct answer is (anemia);