Topic: Body Transport System Subtopic: The movement of blood through the heart
What makes heart sound like dub?
Answer: When the ventricles push the blood out of the heart, the semi-lunar valves open with such a force that a sound like 'dub' is created.
- What happens when blood enters ventricles?
- What are capillaries?
- Why is cross pollination better?
- What is job of plasma?
- What is job of xylem?
- How many types of pollination are there?