Trivia

Hard

What Creature On Earth Has The Highest Blood Pressure?

Blue Whales
Giraffes
Humans
Hummingbirds

Answer: Giraffes

Giraffes have the highest known blood pressure of any creature on earth for a very good reason: their hearts are fighting gravity every step of the way. Just like we use pumps to transport water up to the top of lofty water towers, giraffes require a strong heart and high blood pressure to push blood all the way up the lengthy neck that is a significant part of their 14.1–18.7 feet high bodies.

How high is their blood pressure? While a human being in good health and with average blood pressure has a blood pressure of around 120/80 mm Hg, giraffes maintain blood pressures that are at least approximately twice that of humans and it can skyrocket much higher when the animal is running or otherwise exerting itself.

Don’t worry though, giraffes have evolved to sustain the significantly higher blood pressure. Not only are the walls of their hearts incredibly thick and muscular (much like we design the walls of a boiler to withstand higher pressure), but giraffes have a mechanism for selectively expanding and contracting blood vessels to control and route blood through their body to regulate local pressure.

Trivia

Hard

In The 1960s, RCA Invented A Record That Could Play?

Trivia

Easy

During The 1979 Iran Hostage Crisis American Diplomats Escaped Iran By Posing As?

Trivia

Easy

What Was The First Commercial Application of Microprocessors?

Trivia

Hard

Cydia, The Third-Party Alternative To The Apple App Store, Is Named After What?

Trivia

Hard

Which Of These Common Summertime Foods Radically Increases Sensitivity To Ultraviolet Light?

Trivia

Hard

The First U.S. Federal Official To Be Sworn In On An Ebook Reader Was?

Trivia

Easy

Which Of These Tools Brought File Sharing Widespread Public Attention?

Trivia

Hard

The Only Pantone Color Named After A Movie Character Is Named After A Character From Which Movie?

Trivia

Easy

Concerns Over The Stability Of The Brooklyn Bridge Were Silenced By Marching What Over It?

Trivia

Easy

The Economy Of The Country Nauru Is Based Almost Entirely On Exporting?