A 4-fold increase in blood flow is required. If an increase in blood pressure is required to accommodate the increased flow requirement and the initial blood pressure is 60 mm Hg, what would be the higher pressure needed to increase the flow by 4 fold.
360 mm Hg
240 mm Hg
60 mm Hg to the 4th power
Flow rate changes in accord with this diameter power dependency
square
cube
4th power
8th power
Effect of increasing tube length on volume flow rate through the tube, assuming no change in other contributing factors
decrease
increase
no effect
Effect of decreasing the cross-sectional area of a pipe on the velocity of flow through the pipe
increase
decrease
no change
Approximate percentage of oxygen in the blood carried by hemoglobin.
20%
50%
80%
95%
100%
By what amount would an artery constrict such that blood flowing through the artery would be reduced by 80%