Cardiovascular Pt.1 Flashcards
The heart is a . . . pump driving blood in . . . serial circuts known as ____ & ____ circuts
dual pump driving two serial circuts known as palmunary and systemic circuts
What are capilariers?
smallest vessels where transport trnasfer occurs (at a slow rate)
T/F Arteries carry oxygenated blood away from heart
False = arteries –> cary ANY type of blood AWAY from heart
T/F Veins carry deoxygenated blood towards the heart
False - veins carry ANY type of blood TOWARDS heart
____ in the heart & veins ensure one-way blood flow direction
valves
What causes the initial pressure gradient in the cardiovascular system?
contraction of the heart
Blood flows ____ its pressure gradient of __ P –> __ P
flows down gradient from high P to low P
Does pressure decline/increase as you move across systemic sircut? Why or why not?
pressure decreases due to friction encountered
What does driving pressure refer too?
the high pressure made in the ventricals
How is pressure gradient created for blood flow?
contraction of ventricals
T/F Blood flow is the same as the speed of blood
False - they are not the same
Flow is ____ porportional to the pressure gradient
directly
Flow is _____porportional to resistance
inversely
The poiseuille’s eq. predicts?
how much resistance to flow will occur
3 factors that determine resisatnace (& impact Poiseuille’s eq.?) Which is most important
- Vessel length
- Vessel viscosity
- vessel radius = most important
flow is ___ porportional to the 4th power of radius
directly
resistance is ____ proportional to the 4th power of radius
inversly
Which factor is most important in changing resistance?
vessel radius
flow is _____ proportional to both the length of the vessel & the viscosity of the liquid
inversley
T/F Flow rate is the same as velocity of flow
False = NOT the same
velocity is ____ proportional to Q(flow rate)
[assuming A(radius) is constant]
directly
velocity is ___ proportional to A (radius area)
[assuming Q is constant]
inversley
