Topic: Body Transport System Subtopic: Arteries, veins and capillaries
How does blood flow in veins?
Answer: In veins, blood flows with low pressure. This is why it is said that the blood in the veins moves steadily. Due to low pressure there is a need of valves in the vein to prevent the backward flow of blood.
- What is plasma?
- What happens when atria are full of blood?
- Why is iron important?
- What differs in types of white blood cells?
- How are xylem and phloem arranged in roots?
- What are cross walls?