Answer:
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
