The diagram shows a cross-section of a blood vessel. Which kind of blood vessel is this, and which way is the blood moving?
- Aartery, P to Q
- Bartery, Q to P
- Cvein, P to Q
- Dvein, Q to P
Biology 0610 · IGCSE · Blood vessels
The diagram shows a cross-section of a blood vessel. Which kind of blood vessel is this, and which way is the blood moving?