Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
20 Cards in this Set
- Front
- Back
|
A change in which of the following components will have the greatest change in blood flow |
The radius of a vessel |
|
|
Critical stenosis is one where... |
Both pressure and flow decrease |
|
|
A doubling in the length of a stenosis results in a... |
Two-fold increase in energy losses across the stenosis |
|
|
Bernoulli's principle: If the velocity increases, what must happen? |
Pressure must decrease |
|
|
If volume flow remains the same and the area of a blood vessel decreases what happens? |
The velocity must increase |
|
|
If a collateral vessel develops in parallel to a stenosis, what impact will this have on the total resistance of the system? |
The collateral will lower the total resistance. |
|
|
Two main factors that result in "energy losses" |
Inertia and viscosity |
|
|
In a normal body, blood flow will increase with exercise to what extent? |
Increase 3 to 5 times resting flow |
|
|
The appearance of a "reflected wave" is a result of... |
High resistance arteriolar bed |
|
|
The Reynolds number is used to define... |
Turbulence |
|
|
The total energy of the vascular system has two primary components which are... |
Potential and kinetic energy |
|
|
Which of the following cannot be a unit of volume flow? |
m/s |
|
|
is considered to be part of the nervous system control of peripheral blood flow |
Norepinephrine |
|
|
Which of the following statements is correct? |
Exercise induced vasodilation |
|
|
The greatest inertial energy losses occur as... |
Blood exits a stenosis |
|
|
Which of these statements about collateral vessels is NOT true? |
Exercise will significantly decrease the resistance of collateral beds |
|
|
Low resistance arteries will display... |
Constant forward blood flow throughout the cardiac cycle |
|
|
Pressure is highest at the left ventricle and the lowest at the... |
Right atrium |
|
|
Which term is not a component within the definition of poiseuille law? |
Inertia |
|
|
It converts the pulsatile output of the heat into steady through the capillaries |
Hydraulic filtering |
