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Something that has always confused me is vasoconstriction vs vasodilation and what that means for blood pressure, blood volume, etc… Also, does vasoconstriction or vasodilation happen under sympathetic activation and for what reason?
For a long time I thought that the parasympathetic nervous system increasing contraction of the bladder meant that urination would occur less frequently. After reading about the bladder I want to make sure I get this straight. When the bladder is full a signal is sent that increases parasympathetic activation. This…
So this explanation, particularly the first part, is exactly what I thought about when making my prediction. I said yes because of the fact that theory is in use today, so it would have to include yes. My question is if this is valid in general. If I know a theory or something is relatively accepted (except when talking…
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