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Old 08-13-2015
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Default TPR Vs DP

the pulse pressure, which is the difference between systolic and diastolic pressure, gradually increases from the aorta toward periphery AND The diastolic pressure shows a continuous decrease from the aorta toward the periphery

although as we go down arterial tree the resistance increase and main factor affecting DP is TPR
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Old 08-13-2015
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Pulse pressure increases from aorta to arterioles, not because of the TPR difference, it's because of the difference in vessel compliance.
TPR is not a direct determinant of pulse pressure. Don't compare these two things, please keep them separate.
Let's say within an arteriole itself, if vasoconstriction is occurring, both systolic and diastolic pressure will increase hence no change in pulse pressure. The baseline pulse pressure of an arteriole is more than that of aorta because of the lesser compliance.
TPR increasing or decreasing is a separate thing. I don't know if I was able to convey the concept clearly.
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