Encoded Trivia #140
Science & nature factsPuzzle #140 — Science & nature facts
4 C in the H H
6-word answer
Hint: Last word of the 6-word answer is Heart
The answer is:
4 Chambers in the Human Heart
About This Answer
The human heart has four chambers: two atria and two ventricles working together to pump blood. According to the National Institutes of Health, this four-chamber design enables efficient separation of oxygenated and deoxygenated blood. The American Heart Association documents how the four-chamber heart evolved in mammals and birds. Cardiologists note that this structure supports high metabolic rates. The four-chamber heart represents a critical evolutionary adaptation for warm-blooded animals.