Blood anatomy

Plasma

colorless watery fluid of blood any lymph containing no cells and in which erythrocytes and leukocytes and platelets are suspended. lymph: a thin coagulable fluid containing white blood cells and chyle.
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Platelet

tiny bits of protoplasm found in vertebrate blood; essential for blood clotting. protoplasm: the substance of a living cell(including cytoplasm and nucleus)
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Red blood cell

A mature blood cell that contains hemoglobin to carry oxygen to the bodily tissues. hemoglobin: a hemoprotein composed of globin and heme that gives red blood cells their characteristic color.
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White blood cell

Blood cells that engulf and digest bacteria and fungi. Bacteria: single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission.
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