How many times does the blood pass through the four chambers of the heart in every complete circuit? A. 4 times
B. Once
C. Twice
D. 3 times

The answer is C.Twice

Explanation:

What does the heart look like and how does it work?

Illustrations of Blood Flow to the Heart

Illustrations of Blood Flow to the Heart

The heart is an amazing organ. It starts beating about 22 days after conception and continuously pumps oxygenated red blood cells and nutrient-rich blood and other compounds like platelets throughout your body to sustain the life of your organs.

Its pumping power also pushes blood through organs like the lungs to remove waste products like CO2.

This fist-sized powerhouse beats (expands and contracts) about 100,000 times per day, pumping five or six quarts of blood each minute, or about

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