The animation shows a heart attack resulting from atherosclerosis, which is inflammation of an artery. It was designed to be an immersive experience, it looks like a hollywood movie, very excellent and fantastic animation from Nucleus Medical Art www.nucleusinc.com
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You can download some good quality medical animations related to medicine, surgery, cardiology, orthopaedics, dermatology, obstetrics and gynaecology, psychiatry, ENT, ophthalmology, microbiology, anatomy and pharmacology at rufusrajadurai.wetpaint.com. You can also watch some of these animations at his youtube channel rufusrajadurai