The aorta carries oxygen rich blood away from the heart.
The pulmonary artery transports deoxygenated blood from the heart to the lungs.
The inferior vena cava carries deoxygenated blood from the lower body to the heart.
The coronary artery branches from the aorta and provide oxygen to the heart muscles.
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Different diseases are caused by different types of micro-organisms. Microbes that cause disease are called pathogens. It is important to remember that: A pathogen is a micro-organism that has the potential to cause disease.
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