OrganisationKey Facts
Blood Vessel Adaptations Summary
Part of Blood Components and Vessels — GCSE Biology
This key facts covers Blood Vessel Adaptations Summary within Blood Components and Vessels for GCSE Biology. Blood composition, red and white blood cells, platelets, plasma, blood vessel structure and function, adaptations for transport It is section 6 of 16 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 6 of 16
Practice
18 questions
Recall
24 flashcards
Blood Vessel Adaptations Summary
| Feature | Artery | Vein | Capillary |
|---|---|---|---|
| Function | Carry blood from heart | Return blood to heart | Exchange materials |
| Pressure | High (120/80 mmHg) | Low (5-10 mmHg) | Very low (20-10 mmHg) |
| Wall thickness | Thick, muscular | Thin | One cell thick |
| Lumen size | Small relative to wall | Large relative to wall | Very small (5-10 μm) |
| Valves | None (except heart exit) | Present throughout | None |
| Elastic fibers | Many | Few | None |