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Need help identifying vascular structures in brain matter

As these are very large, they seem to me likely to be sinuses; the central one in red right along the midline is the superior sagittal sinus. I think your blue traces may mark differently named ...
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2 votes

Why does the concentration gradient of one ion represent the entire cell in the equilibrium potential of an ion?

Just add up everything of interest. For example, you can include sodium as which gives you chlorides, and everything else could be further added in a similar fashion, although likely to diminishing ...
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2 votes

Why does sympathetic activity constrict pulmonary vessels?

The stimulation of sympathetic system in the lungs causes vasoconstriction of the blood vessels surrounding the lungs and causes dilation of the bronchioles. This increases the ventilation-perfusion ...
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