Among the Following Choices, Which Organism Likely Has the Highest

Question

Among the following choices, which organism likely has the highest systolic pressure?
A) mouse
B) rabbit
C) human
D) hippopotamus
E) giraffe

Accepted Answer

Giraffes have the highest systolic pressure of any mammal, reaching up to 280 mmHg (millimeters of mercury) to pump blood all the way up their long necks to their brains. In comparison, humans have a systolic pressure of around 120-140 mmHg, while rabbits and mice have even lower pressures. Although hippos are large animals, their systolic pressure is not as high as that of giraffes.