Topic: Body Transport System Subtopic: Diseases of the transport system
Why are pacemaker cells important?
Answer: Pacemaker cells are important because they force the heart to beat. The electricity produced by the pacemaker cells makes the heart muscles contract.
- What is pulmonary vein?
- What are products of respiration?
- What is happening to heart?
- How does blood flow in veins?
- What is sequence of transport of food?
- How is energy formed?