nswer the following THREE questions in the box provided. 1. Why might vasconstriction lead to the symptoms described above? [ 4 marks] 2. What nerves are involved in stimulating the vasoconstriction? [2 marks] 3. Based on your answer to question 2, does this suggest a possible treatment for this condition?
A patient attends her doctor complaining that her fingers feel extremely cold and often go very white in colour, especially in cool conditions or weather when they can become painful or numb. She also notices that, on warming up, her fingers become intensely red in colour for some time before returning to normal.
The doctor makes a diagnosis of Raynaud's syndrome. This is a condition in which cutaneous (or skin) arterioles show an excessive tendency to vasoconstrict (or become narrow) especially in cool conditions or weather.
Answer the following THREE questions in the box provided.
1. Why might vasconstriction lead to the symptoms described above? [ 4 marks]
2. What nerves are involved in stimulating the vasoconstriction? [2 marks]
3. Based on your answer to question 2, does this suggest a possible treatment for this condition?
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