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the valve between the left atrium and the left ventricle.
simple epithelium with flattened cells found in the inner lining of the mouth, oesophagus and...
structure surrounding plan tcells i tgives cells rigidity and strength.
the main blood vessel that returns deoxygenated blood from the head and thorax to the right...
kidney failure which develops over a long period of time.
a blood vessel that returns oxygenated blood from the lungs to the left atrium of the heart.