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biology
biology terms and definitions.
Term | Definition |
---|---|
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 |