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.
- How does red blood cells pass through capillaries?
- Why are Villi essential?
- What is semi-permaeable membrane?
- What is faeces?
- What are root hairs?
- What is meant by word extinct?