BI-1183
Arteries, veins and capillaries
Biology · Secondary 3 · Easy · Arteries, veins and capillaries
During exercise, a person’s muscles respire faster. Which change in the blood vessels of the leg helps deliver more oxygenated blood to these muscles?
- Constriction of leg arteries
- Dilation of leg arteries
- Constriction of leg veins
- Thickening of capillary walls in the leg
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