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biology

biology terms and definitions.

TermDefinition
aorta The major artery that carries oxygenated blood from the heart and divides into smaller arteries around the body
artery Thick, muscular-walled blood vessel that carries blood away from the heart under pressure
atria The smaller upper chambers of the heart
capillary Blood vessels with a wall only one cell thick, allowing substances to easily pass into and out of the blood
plasma The straw-colour fluid that forms part of the blood
platelets Small disc-like cells found in blood that are involved with forming clots
red blood cells. Cells found in the blood that carry oxygen around the body
vein. Thin-walled blood vessel that carries blood back to the heart
ventricles The large lower chambers of the heart
white blood cells. Cells found in the blood that help fight infections
Created by: Samara Hayes