Ultrasound view of the four chambers of the human heart showing valves between chambers.
Fruehaufsteher2, Wikimedia Commons
Looped MRI video of a 13 year old female’s heart.
Alith3204, Wikimedia Commons
Animation of a beating heart.
DrJanaOfficial, Wikimedia Commons
360 degree view of a human heart.
DrJanaOfficial, Wikimedia Commons
3D cross section of beating human heart (computer-generated).
DrJanaOfficial, Wikimedia Commons