As blood volume is lost due to a traumatic injury, the body’s response is to:
A) decrease heart rate and vasoconstrict major veins.
B) increase heart rate and decrease systemic vascular resistance.
C) decrease heart rate and promote peripheral vasoconstriction.
D) increase heart rate and close precapillary arterioles.
Answer: D) increase heart rate and close precapillary arterioles.
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The coverings of the brain and spinal cord are:
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