ONLY THE BARO AND CHEMORECEPTOR can stimulate the VCC.
- An increase in CO2 and a decrease in O2 concentration are detected by chemoreceptors.
- It informs the VCC, which stimulates the sympathetic nerves which are located in the smooth muscular walls of the blood vessel.
- The sympathetic nerves will cause vasocontriction of arterioles and precapillary sphincters.
- This leads to a decrease in blood to non-essential organs.
- Stimultaneously, there is an increase in blood to the working muscles.
- This is because there is a decrease in sympathetic stimulation which causes the arterioles to vasodialate and the precapillary sphinters to vasodialate too.
- This increases blood flow to the working muscles.
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