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Biology, 27.06.2019 07:00 hippocampus
Raynaud's disease results in brief periods of vasospasms. this disease affects blood supply to fingers and toes. it is also known to affect blood flow to lips, ears, nose and nipples. during what is called as "raynaud's attacks", the skin may turn white and then blue for a short time. which of these best describes why these symptoms occur? a) it results in a narrowing of the veins which slows blood flow. b) it results in a narrowing of the arteries which slows blood flow. c) it results in a widening of the veins which increases blood flow. d) it results in a widening of the arteries which increases blood flow.
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