Topic: Body Transport System Subtopic: The movement of blood through the heart
What makes heart sound like lub?
Answer: The contraction of ventricles is so strong that the blood flows with power turning the chamber valves close, This makes the 'lub' sound.
Learn also:
- What is meant by aerobic?
- What is diffusion?
- How can constipation be prevented?
- How does air enter our lungs?
- What are properties of blood present in veins?
- Why is blood important?