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23 Nov 2019

The blood flow speed through an aorta with a radius of 1.15 cm is 0.290 m/s. If hardening of the arteries causes the aorta to be constricted to a radius of 0.950 cm, by how much would the blood flow speed increase?

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Deanna Hettinger
Deanna HettingerLv2
5 Feb 2019

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

Inside diamter of aorta is 1.6 cm and inside diameter ofcapillary is 1.0 x 10 -6 m Average flow speed is 1.0 m/sin aorta and 1.0 cm/s in capillary. If all the blood in aortaeventually flows through a capillary, estimate number ofcapillaries in circulatory system.

In humans,blood flows from the heart to the aorta, from which itpasses into the major arteries. These branch into the smallarteries, which in turn branch into billions of tiny capillaries.Then blood then returns to the heart via the veins. The radius ofthe aorta is about 1.2cm, and the blood passes through it with aspeed of about 40cm/s. A typical capillary has a radius of about4x10-4 cm, and the blood flows through it at a speed of 5x10-2cm/s.

(a) Estimate the number of capillaries in the body.

(b) If the body contains about 5.5 litres of blood how long does ittake for the blood to circulate completely through the body. (1litre = 10cmx10cmx10cm)

The aorta carries blood away from the heart at a speed of about 40cm/s and has a radius of approximately 1.1 cm. The aorta brancheseventually into a large number of tiny capillaries that distributethe blood to the various body organs. In a capillary, the bloodspeed is approximately 0.007 cm/s, and the radius is about 6.0 10-4cm. Treat the blood as an incompressible fluid, and use these datato determine the approximate number of capillaries in the humanbody.
capillaries

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