Multiple choice

The number of chambers in the human heart is�

  1. 1

  2. 2

  3. 3

  4. 4

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The human heart has four chambers: two atria (receiving chambers) and two ventricles (pumping chambers). The right side pumps blood to the lungs, and the left side pumps blood to the body. This four-chamber design is efficient for separating oxygenated and deoxygenated blood.