End systolic volume (ESV) â The amount of blood still in the. ventricles after the contraction is complete. End diastolic volume (EDV) â The amount of blood in the. ventricles after they have filled but prior to the beginning of. the contraction.
This is the fastest form of travel for most snakes, but rattlesnakes donât engage in this style of locomotion often. Rattlesnake speeds have not been specifically measured, but they likely travel at about 2 to 3 miles per hour in very short bursts. In comparison, the fastest humans can run up to 28 miles per hour.
Although the speediest of land animals cannot match the times of the fastest flyers, the cheetah, recognized as the worldâs fastest runner, is able to run 70 MPH for short distances. From a standing start, the cheetah can accelerate to 45 MPH in two seconds and cover a distance of sixty-five yards.