The human heart contracts rhythmically, so blood enters the blood vessels in portions.
| April 30, 2021 | education
The human heart contracts rhythmically, so blood enters the blood vessels in portions. However, blood flows through the blood vessels in a continuous stream. How can you explain this?
The heart works rhythmically. For some fractions of a second, the heart contracts and rests. But the blood flows continuously. If we cut ourselves or take blood from us for analysis, one flows evenly, as it seems to us. In fact, it pulsates in the veins, but this pulsation is hardly noticeable to us. If we damage the artery, then we will clearly see the pulsation. All because the arteries go directly from the heart. Veins travel a greater distance and go to the heart. Blood flows more slowly through the veins. In addition, we have a closed circulatory system.
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