The group of authorhythmic cells in the interatrialseptum of the heart that relays excitation from the atria to the ventricles is known as the

How did the discovery of the rhesus factor affect society? o more patients died from having a transfusion with the wrong rhesus factor 0 new treatments during pregnancy could prevent harm to the developing child. o less donated blood could be used in the treatment of patients. the number of blood types was reduced by half

What’s the student’s scientific question

All ova contain sex chromosomes corresponding to: x y xx xy