Dr Peter Vincent and Miss Ana Plata, of Imperial College, London.
Shortlisted for the British Heart Foundation Reflections of Research competition 2010.
The first animation shows the construction of a computer model of the body's main artery, the aorta, made by scanning a cast of blood vessels from a rabbit.
The second video depicts the movement of blood inside this model.
Atherosclerosis, a disease involving the build-up of fatty plaques in the arteries, is the underlying cause of most heart attacks and strokes.
Over the last decade, it's been shown that the onset of this disease depends on the way your blood flows.
A computerised representation of the structure of the blood vessels will help researchers accurately model blood flow so they can study its relationship with artery disease.
"Our BHF-funded research group uses advanced computational techniques to solve fluid dynamics problems in the field of biomedicine.
"These animations are the result of a strong collaborative effort between clinicians, biologists and engineers," said Ana Plata.
First video: P. Vincent, A. Hunt, S. Sherwin, P. Weinberg.
Second video: A. Plata, P. Vincent, A. Hunt, S. Sherwin, P. Weinberg.