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.
According to Vandeventer, the average female Eastern diamondback rattlesnake is about 4 1/2 feet long and males average 5 feet or so. Specimens over 6 feet are considered rare and Vandeventer said the largest documented Eastern diamondback he knows of was 7 feet, three inches long.