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a small finger-like projection found on the inner folds of the small intestine, which increases the surface area for the absorption of nutrients. The plural of villus is villi.
highly addictive substance found in tobacco that accelerates the heart rate, and contracts and...
in plants: the female reproductive organ of the flower where the ovules are formed.
double-membraned, pigmented, cytoplasmic organelles found in plant cells. The organelles have...
specialised heart muscle tissue between the right atrium and right ventricle which conducts the...