1.What does ‘oxygenated blood’ mean?
Oxygenated blood is blood that has been transported to the lungs and contains oxygen.
2.What type of blood vessel usually carries oxygenated blood?
Arteries contain oxygenated blood.
3.What does ‘deoxygenated blood’ mean?
Deoxygenated blood is blood that has not travelled to the lungs and so does not contain oxygen.
4.What type of blood vessel usually carries deoxygenated blood?
Veins carry deoxygenated blood.
5.Why do our cells need oxygen?
Our cells need oxygen in order to respire.
6.What happens to cells if they do not receive enough oxygen?
Any help here?
7.What is the function of our lungs?
I need a good definition, can't think of one at the moment.
8.What is added to the blood in a heart-lung machine?
A heart lung machine adds oxygen to the blood.
9.What waste product is removed from the blood in the lungs? Does the heart-lung machine remove this waste product?
10.What is the function of our heart?
Our heart pumps blood around the body, continually supplying cells with oxygen and glucose.
11.What is heart bypass surgery?
Any help here?
12.What is the job of the valves in the heart?
Valves in the heart prevent the blood from flowing in the wrong direction, and keep it going in one direction.
13.As a number, how many of the patients in the 2001 study experienced reduced brain function?
Don't have the booklet with me
14.Why do you think the scientists needed to adjust the figures for age?
Scientists needed to adjust the figures for age as age is a factor in heart disease, and so as the patients' ages increased two factors were being changed. If the figures had not been adjusted, it would have been hard to tell whether it was age or the heart-lung machine which was causing the pump head syndrome.
15.What is meant by a control group?
A control group is a group used as a standard for comparison.
16.What is coronary heart disease and what factors increase the chance of coronary heart disease?
17.How might heart disease affect the cells of the brain?
If the heart cannot pump the blood as well as it used to, it will take longer for the brain to recieve oxygenated blood.
18.In the second study, what percentages of those with heart disease;
(i) Had surgery using the heart-lung machine
(ii) Had surgery without using the heart-lung machine
(iii) Did not have surgery
Don't know these
19.What do the results of the second study suggest?
Don't have the booklet on hand
20.What are the features of a good scientific study?
A good study would have a large sample size and [I forgot the other feature ]