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Artificial Cardiac Pacemakers
- Essay length: 3972 words
- Submitted: 19/05/2011
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Marked by teacher:
Kerry jackson
Teacher essay summary
An excellent GCSE level report, which addresses all the research questions posed clearly. Relevant images and statistics are used throughout to illustrate key points and all information is thoroughly referenced. To improve:
1)Include relevant biological detail regarding how the transmission of the electrical impulse controls heart muscle contraction in the different chambers
2)Clearly explain that conditions such as Bradycardia and Arrythmia result in oxygen deprivation, and that oxygen deprivation causes the symptoms
3)Consider including the research questions as sub-headings. The use of sub-headings helps to highlight to the reader that specific criteria or questions have been addressed
Marked by teacher Kerry jackson 19/02/2012
The first 200 words of this essay...
Research questions :
Why is the constant beating of the heart important?
What causes the heart to beat abnormally?
What are the implications of having an abnormal heart beat?
What is an artificial pacemaker and how does it regulate an abnormal heart beat?
How are artificial pacemakers implanted?
What are the advantages and disadvantages of using an artificial pacemaker?
What are some alternatives used instead of artificial pacemakers?
The importance of the heart
The heart is an essential organ possessed by every living human. It is vital as it pumps blood rich in oxygen (received from the lungs) to every living cell within the body and pumps deoxygenated blood to the lungs (from the body)1. In the opposite diagram of a human heart, the blue sections represent the transport of deoxygenated blood and the red sections represent the transport of oxygenated blood. The heart is necessary in sustaining the lives of every single human being. This is because without oxygen, cells cannot carry out the process of cellular respiration (the release of energy from glucose). This means that the body cells will have insufficient energy to carry out regular functions needed for
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MbT essay summary
An excellent GCSE level report, which addresses all the research questions posed clearly. Relevant images and statistics are used throughout to illustrate key points and all information is thoroughly referenced. To improve:
1)Include relevant biological detail regarding how the transmission of the electrical impulse controls heart muscle contraction in the different chambers
2)Clearly explain that conditions such as Bradycardia and Arrythmia result in oxygen deprivation, and that oxygen deprivation causes the symptoms
3)Consider including the research questions as sub-headings. The use of sub-headings helps to highlight to the reader that specific criteria or questions have been addressed
