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Biology GCSE Edexcel: The Heart Questions & 100% Correct AnswersLatest Test | Graded A+ | Pas $9.99   Add to cart

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Biology GCSE Edexcel: The Heart Questions & 100% Correct AnswersLatest Test | Graded A+ | Pas

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  • Biology GCSE Edexcel

How does a heart attack occur? ֎ -:- When blood supply to muscles in parts of the heart either stops or is severely reduced, causing damage and stopping the heart from pumping properly. How can you help stop a heart attack? ֎ -:- By using a defibrillator, which sends an electric shock to t...

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  • August 27, 2024
  • 6
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Biology GCSE Edexcel
  • Biology GCSE Edexcel
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Excellence is key | 2024/2025 ~Page |1



Biology GCSE Edexcel: The Heart
Questions & 100% Correct Answers-
Latest Test | Graded A+ | Passed
How does a heart attack occur?


֎ -:- When blood supply to muscles in parts of the heart either stops or is

severely reduced, causing damage and stopping the heart from pumping

properly.




How can you help stop a heart attack?


֎ -:- By using a defibrillator, which sends an electric shock to the heart to get it

pumping again.




What is the structure of the heart?


֎ -:- Look at the diagram.

(Mitral valve is also known as the bicuspid valve)


(Also, the septum is the the part in the middle of the two chambers that divides the two

chambers)




Explain in detail where and how the blood flows in the heart.




26/08/2024 | © Copyright- This work may not be copied for profit.

, Excellence is key | 2024/2025 ~Page |2


֎ -:- Deoxygenated blood from most of the body enters the right atrium

through the vena cava. At the same time, oxygenated blood from the lungs

enters the left atrium from the pulmonary vein. When these top chambers are

full, the muscles around them contract to push blood into the ventricles. The

muscles around the ventricles then contracts, forcing the blood out of the

heart. While this happens, the atria wall muscles relax and allow more blood to

refill them.




What is the function of heart valves?


֎ -:- They prevent the back flow of blood.




Which valves are between the heart's chambers?


֎ -:- The tricuspid valve is between the right atrium and ventricle and the

bicuspid valve is between the left atrium and ventricle




Which valves are between the heart's ventricles and arteries?


֎ -:- The pulmonary valve is between the right atrium and the pulmonary artery.

The aortic valve is between the left ventricle and the aorta.




Is the aorta an artery or a vein?


֎ -:- Artery




26/08/2024 | © Copyright- This work may not be copied for profit.

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