IAL Edexcel Biology - Circulatory System
Topic 1 Molecules Transport and Health
1.6 Understand why many animals have a heart and circulation (mass transport to overcome the limitations of diffusion in meeting the requirements of organisms)
1.7 Understand how the structures of blood vessels (capillaries, arteries and veins) relate to their functions
Transport in large organisms
Structure and function of different blood vessels
👇 Important points to understand for IAL Edexcel Biology 👇
Common misconception in the IAL Biology exam:
Smooth muscles in arteries do not squeeze blood but only controls the amount of blood flowing into different tissues. A stable blood pressure during diastole is due to the recoil of elastic fibers.
Want to improve your IAL Edexcel Biology? Check out our study tips here
Time for a break!
Written by Vivian | GCE Biology Specialist @ TUTTEE
1. Edexcel AS Biology Revision Guide. Edexcel.
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