Definition of rector for English Language Learners. : 1  a priest or minister who is in charge of a church or parish. : 2  a person who is in charge of a university or school.
Cardiac Cycle. in Physiology. Cardiac events appearing from the beginning of one heart beat to the beginning of next heart beat and repeating themselves successively. â¢ Cardiac cycle time (H.Rate = 75/min) : 0.8 sec. Systole: 0.27 sec. Diastole: 0.53 sec.
Your heart rate is the number of beats (rhythmic contractions) per minute of your heart. Your heart is the muscular organ, located in the chest, behind and to the left of the breastbone that maintains circulation of the blood. Heart rate is a measure of cardiac activity.