Medical Terminology Simplified

(1) ( )

(2) ( )

Left atrium

(3) ( )

Right ventricle

Left ventricle

(4)

(6)

(5)

Frame 5–72to Frame 5–79

Cardiovascular System • CHAPTER 5 175

P

R

S

T

Q

P-wave T- w a v e ST segment

P–R interval QRS complex Q–T interval

Figure 5-6Anterior view of the conduction pathway of the heart with an electrocardiogram
tracing of one normal heartbeat.