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Plasma
Liquid component of blood transporting nutrients and gases.
Red Blood Cells
Biconcave cells transporting oxygen via haemoglobin.
Haemoglobin
Protein in red blood cells binding oxygen.
Oxyhaemoglobin
Complex of oxygen and haemoglobin in blood.
Deoxygenated Blood
Blood low in oxygen returning to the heart.
Oxygenated Blood
Blood rich in oxygen from the lungs.
Arteries
Thick-walled vessels carrying blood away from heart.
Veins
Thinner-walled vessels returning blood to the heart.
Capillaries
Thin-walled vessels for material exchange in tissues.
Phagocytes
White blood cells engulfing and digesting pathogens.
Lymphocytes
White blood cells producing antibodies against pathogens.
Antibodies
Proteins specifically targeting and destroying pathogens.
Pathogens
Micro-organisms causing diseases, like bacteria and viruses.
Phagocytosis
Process of engulfing and digesting pathogens.
Valves
Structures in veins preventing backflow of blood.
Coronary Arteries
Blood vessels supplying blood to the heart muscle.
Pulmonary Vein
Carries oxygenated blood from lungs to heart.
Aorta
Main artery distributing oxygenated blood to body.
