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 crocodiles have been clocked swimming at 10 mph, there is no definitive answer for how fast an alligator can swim. When alligators walk on land, they can move very quickly and are capable of running at speeds of 7.5 to 9 mph for short distances.