Which of the following statements concerning regulation of blood flow is true?
A) Increased levels of metabolic waste products and decreased oxygen concentration in tissues promote hyperemia through the tissues
B) If blood flow to a tissue is blocked for a period of time and then the block is removed, the result is a reactive hyperemia in which blood flow through the affected tissue remains low
C) According to flow autoregulation, if blood pressure to an arteriole is decreased, blood flow will not return toward its original level until the original blood pressure is restored
D) Both increased levels of metabolic waste products and decreased oxygen concentration in tissues promote hyperemia through the tissues and if blood flow to a tissue is blocked for a period of time and then the block is removed, the result is a reactive hyperemia in which blood flow through the affected tissue remains low are true
E) Both increased levels of metabolic waste products and decreased oxygen concentration in tissues promote hyperemia through the tissues and according to flow autoregulation, if blood pressure to an arteriole is decreased, blood flow will not return toward its original level until the original blood pressure is restored are true
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