What prevents the backflow of blood?
Understand the Problem
The question is asking about the mechanisms or structures in the circulatory system that prevent blood from flowing backward, likely referring to valves in the heart and veins.
Answer
valves
The final answer is valves.
Answer for screen readers
The final answer is valves.
More Information
Valves in the heart and veins ensure one-way blood flow. They open and close tightly over the cardiac cycle.
Sources
- How the heart works - honorhealth.com
- What prevents the backflow of blood inside the heart during contraction - Byjus - byjus.com
- What prevents back flow of blood in veins? - Study.com - homework.study.com
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