Topic: Food Energy and Respiration Subtopic: Introduction
What is alveolus?
Answer: Alveolus is also known as air sac. Alveolus is the origin where gaseous exchange takes place. Blood vessels are present in alveolus.
- What happens to proteins in liver?
- What happen when we exhale?
- Are varicose veins dangerous?
- What is heart transplant?
- What happens when blood enters ventricles?
- What are Cilia and why are they important?