How Fast Does Blood Travel Through an Arteriole?

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The discussion focuses on calculating the speed of blood flow through an arteriole, given its diameter and volumetric flow rate. The diameter of the arteriole is 0.030 mm, and the blood flow rate is 5.5 x 10^-6 cm^3/s. The relationship between volumetric flow (Q), area (A), and velocity (V) is highlighted, with the equation Q = A * V. The participant acknowledges the distinction between speed and velocity, noting that speed is the magnitude of velocity. The conversation emphasizes the need to determine the cross-sectional area to calculate the speed accurately.
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Homework Statement



A typical Arteriole has a diameter of .030 mm and carries blood at the rate of 5.5* 10^-6 cm^3/s. What is the speed of the blood in an arteriole?

Homework Equations



s=P/vρ

The Attempt at a Solution



Blood is made of mostly water, so I used the same ρ as water (ρ=1000), and multiplied by the velocity given. I have the diameter, but I am not sure what do do with it or how to find the pressure.
 
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Volumetric flow is given by:

Q=A*V and has the units of volume per unit time. A is area, V is velocity

So, determine the velocity from the above equation.
 
I already have velocity, I am looking for speed
 
Speed is the magnitude of velocity. Velocity is a vector entity. It has both magnitude and direction. Speed is only the magnitude of velocity.
 
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