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.
heart rate or heart pulse is the speed of the heartbeat measured by the number of contractions of the heart per unit of time typically beats per minute bpmthe heart rate can vary according to the body s physical needs including the need to absorb oxygen and excrete carbon dioxidehe maximum heart rate hr max is the highest heart rate an individual can achieve without severe problems through exercise stress and generally decreases with age