Physics Exam #1 Flashcards
When looking for pressure gradient that might suggest pulmonic valve stenosis, you would assess the flow
during systole
In the previous question the higher pressure would be found
a. in the right atrium- wrong
b. in the RV
c. in the LA
d. in the LV
e. in the aorta
?
If the force changes from 5 newtons to 10 newtons, the area must ____ in order to maintain the pressure
a. double
b. reduce to half
c. quadurple
d. reduce to one quadruple
e. reduce to one quarter
f. stay the same -wrong
?
- 00562 seconds is equal to
a. .562 msec
b. .562 usec
c. 5.62 usec
d. 562 msec
e. 5620 usec
e. 5620 usec
using the pressure formula: if the area is changed from 30cm^2 to 15cm^2, what must the force do to maintain the same pressure?
a. increase x2
b. decrease to 1/2
c. increase x 16
d. decrease to 1/16
e. increase x 10,000
b. decrease to 1/2
which is NOT one of the differences human circulation and laboratory conditions in poiseuilles lab?
a. elastic vessel vs. rigid tubes
b. steady flow vs. pusatile flow
c. newtonian fluid vs. blood
d. laminar flow vs. trubulent flow
e. all of the above - wrong
?
cancelling the units when dividing cardiac output by the heart rate leaves
a. L/min
b. L/sec
c. L/beat
d. mL/sec
e. min/beat
c. L/beat
The units of force include all accept
a. slug
b. pound
c. dyne
d. newton
e. c&d
a. slug
an objects “mass” can be measured by
a. how much it resists acceleration
b. how much space it takes up - wrong
c. how it responds to electrical current
d. the resistance to flow
e. its color characteristics
?
The principle of increased contractile force resulting from increased LV filling comes from
frank starling
using poiseuilles law what would happen to volume flow rate if the pressure difference changed from 50mmHg to 25mmHg?
decreased by 1/2
radius increased by 4 times, volume flow rate is
x256
22,450V is equal to
22.45kV
5.19L is equal to
5190 mL
what proportion of the bodys blood is normally found in the venous side of the circulation at rest?
67%
