What prevents backflow of blood?
Understand the Problem
The question is asking about the mechanisms in the circulatory system that prevent the backflow of blood, which usually refers to the role of valves in the heart and veins.
Answer
Valves
Valves prevent the backflow of blood.
Answer for screen readers
Valves prevent the backflow of blood.
More Information
Valves in the heart, such as the tricuspid, pulmonary, mitral, and aortic valves, ensure unidirectional blood flow during the cardiac cycle.
Tips
A common mistake is thinking that muscle contractions alone prevent backflow. While muscle contractions are important, it is the valves that specifically prevent backflow.
Sources
- The web page with info on - Example Source - urmc.rochester.edu
- How the heart works - HonorHealth - honorhealth.com
- What prevents the backflow of blood inside the heart during contraction? - BYJU'S - byjus.com
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