Douglas Adams and the question of arterial blood pressure in mammals.

We thank Sandal et al for taking an interest in our paper[1] and the intriguing question on the determinants of mean arterial blood pressure (MAP) in mammals. Sandal et al[2] present a correlation between MAP and the vertical distance between the heart and the brain in 16 different species of (predominantly large) mammals. 1 Poulsen CB, Wang T, Assersen K, Iversen NK, Damkjaer M. Does mean arterial blood pressure scale with body mass in mammals?. [Extracted from the article]