This organ is affected by Wolff-Parkinson-White syndrome. In crocodilians, the foramen of Panizza joins two of its parts, and in infants, it features a foramen ovale that later closes.
This organ is affected by Wolff-Parkinson-White syndrome. In crocodilians, the foramen of Panizza joins two of its parts, and in infants, it features a foramen ovale that later closes. Its papillary muscles tighten the chordae tendineae, and two of its structures are sometimes called auricles. The QRS complex results from the action of this organ's bundle of His, Purkinje fibers, and SA node. It is located in a two-walled sac called the pericardium and its electrical potential can be measured with an EKG. In humans, it consists of two atria and two ventricles. For 10 points, name this muscular organ that pumps blood.
This organ is affected by Wolff-Parkinson-White syndrome. In crocodilians, the foramen of Panizza joins two of its parts, and in infants, it features a foramen ovale that later closes.
 heart 