Explain the differences in structure between a vein and an artery
Arteries have a narrower lumen with a thicker layer of muscle tissue which contains more elastic. Whereas veins have a wider lumen with a thinner layer of muscle tissue. Veins also contain valves to prevent back flow as the blood flowing within them is at a lower pressure than the blood in arteries.
LK
Related Biology GCSE answers
All answers ▸Explain what advantage a large surface area to volume ratio will provide for a penguin living in Antarctica
Explain the role of ADH in regulating the water content of the blood.
How do white blood cells defend against invading pathogens?
Do prokaryotes have a nucleus.