Afterload is increased when aortic pressure and systemic vascular resistance are increased, by aortic valve stenosis, and by ventricular dilation. When afterload increases, there is an increase in end-systolic volume and a decrease in stroke volume.
Best Answer: Sharks typically swim with the even, liquid grace of a creature completely at home with its place in the Universe. Large sharks generally cruise at a leisurely 1.5 miles (2.4 kilometres) per hour.Because most species fare poorly in captivity, the maximum swimming speed of a shark has seldom been measured.f, as Thorburn and Bhana attest, the shark did indeed start from a standstill-which seems behaviorally unlikely-to cover the stated distance in the stated time, the little Mako must have achieved an acceleration of at least 50 feet (15 metres) per second, per second.
Behavior [edit]. The shortfin mako shark is the fastest species of shark. Its speed has been recorded at 40 km/h (25 mph) with bursts of up to 74 km/h (46 mph). This high-leaping fish-they can leap approximately 9 m (30 ft) high or higher in the air-is a highly sought-after game fish worldwide.