Explore this spelling list: GCSE Biology: Circulatory System. Here, you'll find everything you need to excel in spelling. Choose between our online games and printable spelling lists using the buttons above.
Key words for GCSE Biology.
|  | artery | An artery is a vessel that carries blood away from the heart. | 
|  | vein | An vein is a vessel that carries blood to the heart. | 
|  | capillary | A capillary is a small blood vessel with thin walls for diffusion. | 
|  | valve | The valve stops the blood from flowing backwards. | 
|  | pulmonary | Pulmonary means to do with the lungs. The pulmonary artery pumps blood from the heart to the lungs and the pulmonary vein carries blood from the lungs to the heart. | 
|  | coronary | The coronary artery supplies blood to the heart muscle. | 
|  | aorta | The aorta carries blood from the heart to the body. | 
|  | vena | The vena cava carries blood from the body to the heart. | 
|  | cava | The vena cava carries blood from the body to the heart. | 
|  | atrium | The upper chamber in the heart is called the atrium. | 
|  | ventricle | The lower chamber in the heart is called the ventricle. | 
|  | chamber | Chamber means space or room. | 
|  | plasma | Plasma is the part of the blood that carries substances like nutrients and hormones around the body. | 
|  | red | Red blood cells carry oxygen around the body. | 
|  | white | White blood cells fight pathogens. | 
|  | pathogen | A pathogen is something that causes a disease, like a virus. | 
|  | platelets | Platelets form blood clots to stop bleeding. | 
|  | haemoglobin   | Haemoglobin transports oxygen around the body. | 
|  | oxyhaemoglobin | Oxyhaemoglobin is oxygen mixed with haemoglobin. | 
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