Final answer:
The major segments of an ECG (EKG) are the P wave and the QRS complex.
Step-by-step explanation:
The major segments of an ECG (EKG) are the P wave and the QRS complex. The P wave represents the depolarization of the atria, while the QRS complex represents the depolarization of the ventricles. These segments are important in understanding the electrical events and the contraction of the heart.