Ten > Human Circulatory System

Asked by Basanta · 2 years ago

The diagrams alongside show two main blood vessels. They carry blood into different parts of the body.

1. Identify the blood vessel that has no valve and related with body parts other than lungs.
2. Between them which blood vessel causes heart attack due to blood flow obstruction?
3. Write any two differences between these blood vessels on the basis of pulmonary circulation.