What does the plasma carry?

How are red blood cells adapted to their function?

What is oxyheamoglobin?

What is oxyheamoglobin?

Name the different blood vessels and name their jobs:

Explain how the structure of each blood vessel is adapted to its function:

Explain how the different parts of the heart work together to circulate the blood:

The left ventricle has a thicker wall than the right. Why?

What is a double circulatory system?