In the brachial artery A. Pulse waves travel at the same velocity as

1.	In the brachial artery A. Pulse waves travel at the same velocity as blood. B. Pulse pressure falls with decreasing elasticity of the wall. C. Pressure rises markedly when the artery is occluded distally. D. Pressure falls when the arm is raised above head level. E. Pulse pressures have a smaller amplitude than aortic pulse pressures.
Answer» A. False Pulse waves travel at about ten times the blood velocity. B. False It rises; arterial elasticity normally damps the pulse pressure. C. False Blood flows off rapidly via collaterals so that little pressure change occurs. D. True By the hydrostatic equivalent of the column of blood between it and the heart. E. False Brachial arterial pulse pressures are greater due to the superimposition of waves reflected from the end of the arterial tree.

In the brachial artery A. Pulse waves travel at the same velocity as blood. B. Pulse pressure falls with decreasing elasticity of the wall. C. Pressure rises markedly when the artery is occluded distally. D. Pressure falls when the arm is raised above head level. E. Pulse pressures have a smaller amplitude than aortic pulse pressures.

Answer»

A. False Pulse waves travel at about ten times the blood velocity.

B. False It rises; arterial elasticity normally damps the pulse pressure.

C. False Blood flows off rapidly via collaterals so that little pressure change occurs.

D. True By the hydrostatic equivalent of the column of blood between it and the heart.

E. False Brachial arterial pulse pressures are greater due to the superimposition of waves reflected from the end of the arterial tree.

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