Week 5 Flashcards
Pressure is used for ___.
In solids, the quantity force per unit area is referred to as ___.
Pressure is used for gases or liquids
In solids, the quantity force per unit area is referred to as stress.
Pressure is measured in
Newton’s per square meters, i.e. Pascal.
1 mmHg is equal to
0.133 kPa
Fluid -
A substance in the liquid or gas phase.
For fluids at rest, the shear stress is
zero
Intermolecular bonds are strongest in
solids
Intermolecular bonds are weakest in
gases
Body of fluid is not able to resist a shearing force exerted on its surface, so it…
must keep deforming when subjected to it.
When the pressure in the cuff exceeds the systolic pressure,
there is no blood flow to the lower arm and, consequently, no sounds.
When the pressure in the cuff is lowered with the release bulb to just below the systolic
pressure
there is intermittent flow, which w is turbulent and produces gurgling sounds called the Korotkoff or K
sounds.
Korotkoff or K sounds -
gurgling sounds produced by intermittent turbulent flow when the cuff P is lowered just below systolic P
As the cuff pressure is lowered further, K sounds…
get louder and then lower and are
heard until the cuff pressure decreases to the diastolic pressure
Blood flow is not interrupted when the cuff P is less than the diastolic pressure
and the K sounds cease because the blood flow is no longer turbulent
The onset of the K sounds denotes
the systolic blood P
The end of the K sound denotes
the diastolic P
