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Edexcel A Level Biology Topic 1 Questions with solutions 2024 update How are capillaries adapted to their function? - Answer permeable walls 1 cell thick, close to every cell What are the 3 stages of the cardiac cycle? - Answer atrial systole, ventricu $10.49   Add to cart

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Edexcel A Level Biology Topic 1 Questions with solutions 2024 update How are capillaries adapted to their function? - Answer permeable walls 1 cell thick, close to every cell What are the 3 stages of the cardiac cycle? - Answer atrial systole, ventricu

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Edexcel A Level Biology Topic 1 Questions with solutions 2024 update How are capillaries adapted to their function? - Answer permeable walls 1 cell thick, close to every cell What are the 3 stages of the cardiac cycle? - Answer atrial systole, ventricular systole, diastole Features of atrial...

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  • Edexcel A Level Biology Topic 1 Questins with s
  • Edexcel A Level Biology Topic 1 Questins with s
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Edexcel A Level Biology Topic 1
Questions with solutions 2024
update
How are capillaries adapted to their function? - Answer
permeable walls 1 cell thick, close to every cell


What are the 3 stages of the cardiac cycle? - Answer atrial
systole, ventricular systole, diastole


Features of atrial systole - Answer -Atria contract, ventricles
relax
-Atrioventricular valves open
-Blood pushed into ventricles

, Features of ventricular systole - Answer -Ventricles contract ,
atria relax
-Semilunar valves open
-Blood pushed into aorta and pulmonary artery


Features of cardiac diastole - Answer -Atria and ventricles
relaxed
-Blood returns to heart
-Atria and ventricles fill


features of the heart - Answer -Four chambered, sends blood
to the upper and lower body.
-double pump


Atherosclerosis - Answer 1- Endothelium damaged or
dysfunctional
2-Inflammatory response
3-Calcium salts and fibrous tissues harden, forming plaque
4-Increased blood pressure, positive feedback

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