Cardiovascular System Flashcards
1
Q
🔺P equation
A
Q X R
2
Q
Volumetric flow rate (Q) equation
A
flow velocity (v) X cross-sectional area (A)
3
Q
Total resistance of vessels in series
A
Rt = R1 + R2 + R3 + …
4
Q
Total resistance of vessels in parallel
A
1/RT= 1/R1 + 1/R2 + 1/R3 + …
5
Q
Which vessels have the highest total cross-sectional area and lowest flow velocity?
A
Capillaries
6
Q
Pressure gradients drive flow from _____ pressure to _____ pressure
A
high; low
7
Q
What accounts for most of Total Peripheral Resistance (TPR)?
A
Arterioles
8
Q
Which vessels provide most of blood storage capacity?
A
Veins
9
Q
What does blood viscosity depend on?
A
Hematocrit
10
Q
When does blood viscosity increase?
A
Hyperproteinemic states (eg: multiple myeloma), polycythemia
11
Q
When does blood viscosity decrease?
A
Anemia
12
Q
What is the compliance equation?
A
Compliance= 🔺V/🔺P
