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.
- Why large molecules cannot absorb into blood?
- Where is blood taken after lungs?
- What are raw products used by plants?
- Why is cold caused?
- What is stigma?
- Why should tissue paper or handkerchief used?