O-LevelBiologyTransport in Humans5090/11 · Oct/Nov 2024 · Q261 Mark
Raynaud's syndrome is a condition that can be triggered by stress. It causes the hands and feet to react as if they were affected by extreme cold. Which reaction will take place in the hands and feet of a person with Raynaud's syndrome?
Avasoconstriction – blood vessels at the skin surface narrow, reducing blood flow
Bvasoconstriction – blood vessels at the skin surface widen, increasing blood flow
Cvasodilation – blood vessels at the skin surface narrow, reducing blood flow
Dvasodilation – blood vessels at the skin surface widen, increasing blood flow
✓ Correct answer
A: vasoconstriction – blood vessels at the skin surface narrow, reducing blood flow
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