TPR bio: Circulatory system

[Stephen2009]

Question:

So they said that the sympathetic system can increase the overall peripheral resistance, R, and since ΔP = QR, Q remains constant and ΔP increases, blood pressure must increase since Q remains constant. (right?)

Then the next page says constricting the arterioles increases the resistance to blood flow, which decreases blood flow and decreases venous return?

How are both of these statements possible?

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[Pons Asinorum]

Question:

So they said that the sympathetic system can increase the overall peripheral resistance, R, and since ΔP = QR, Q remains constant and ΔP increases, blood pressure must increase since Q remains constant. (right?)

Then the next page says constricting the arterioles increases the resistance to blood flow, which decreases blood flow and decreases venous return?

How are both of these statements possible?

OVERALL peripheral resistance raises blood pressure, since it's a global. The next part about arterioles is local. You're decreasing blood flow and venous return in some tissues in order to increase them in others.