Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

NYCC Systems Phys > Circulation: Hemodynamics of Blood Flow > Flashcards

Circulation: Hemodynamics of Blood Flow Flashcards

1
Q

what 2 laws describe circulation?

A

Ohm’s Law & Poiseuille’s Law

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what is venous blood pressure?

A

0 - 4mmHg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

venous blood pressure is equal to ____

A

right atrial pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what type of blood vessel has the largest cross sectional area?

A

capillaries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what blood vessel has the smallest cross sectional area?

A

aorta

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what blood vessel has the fastest velocity?

A

aorta

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what blood vessel has the slowest velocity?

A

capillaries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

can you hear blood flow?

A

NO

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what type of flow do RBCs travel in?

A

laminar flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

does blood pressure vary across large arteries?

A

NO

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what type of blood vessels have variable pressures?

A

arterioles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

the heart acts as a ____ from a … system to a … system

A

pump
0 pressure vein system
high pressure arterial system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what is the overall equation for Ohm’s law?

A

flow = change in P/resistance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what is flow equivalent to?

A

cardiac output

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

in Ohm’s law, where does change in pressure occur

A

between artery and vein

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what is another way to write the Ohm’s law equation?

A

CO = (mean arterial P - central venous P)/total peripheral resistance

17
Q

what is another term for central venous pressure?

A

right arterial pressure

18
Q

what is Poiseuille’s Law?

A
  • flow is proportional to the radius or diameter to the 4th power
  • pressure is constant to calculate impact of radius on flow
19
Q

vasoconstriction causes a decrease in…

A
  • flow
  • hydrostatic P; BP
  • blood volume
  • conductance
    (FPVC)
20
Q

vasoconstriction causes an increase in…

A

resistance (R)

21
Q

what factors increase resistance?

A
  • longer vessel
  • blood viscosity
  • decreased radius (most impact)
22
Q

vasodilation causes a decrease in…

A

resistance (R)

23
Q

vasodilation causes an increase in…

A
  • flow
  • hydrostatic P; BP
  • blood volume
  • conductance
    (F,P,V,C)
24
Q

what is compliance?

A

ability of a vessel to expand when more blood flow enters in

25
Q

do veins or arteries have more compliance? why?

A

veins
larger lumen per size of vessel

26
Q

what condition can decrease the compliance of arteries?

A

atherosclerosis

27
Q

atherosclerosis would cause an increase in…

A

resistance

28
Q

what segment of the circulatory system has the highest velocity?

A

aorta (large diameter)

29
Q

what vessels have the highest total cross-sectional area in the circulatory system?

A

capillaries

30
Q

the tendency for turbulent flow is greatest in the ____

A

aorta

NYCC Systems Phys (42 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions