What is the reason why blood pressure and a larger cross sectional area of blood vessel cause a lower blood pressure and vice versa?
This question is related to another question I found here.
The answer given to that question says that the reason why a narrower blood vessel have higher blood pressure (which I believe refers to static pressure instead of dynamic pressure according to this website) is beacuse
the resistance is high and thus the heart needs to pump blood at higher pressure to maintain the same average flow rate as in a normal blood vessel.
However, I've found a different argument from a website that contradicts the above reason.
According to this website,
Opening and closing different arteries affects your blood pressure. The more narrow your arteries are, the less space there is for your blood to flow in and the harder it pushes against the arteries’ walls.
The argument presented in the second block quote uses the common misconception of how fluid works which Bernouli's principle shows to be not true by energy conservation i.e. faster fluid leads to higher pressure.
So which argument of the two arguments presented is right?