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.
The number of times your heart contracts in a minute, when you are resting is known as normal heart rate (HR) or resting heart rate (RHR). It is expressed in beats per minute (bpm). Men and women can measure their heart rates by calculating the pulse for 15 seconds and then multiplying the figure by four.