Cardiovascular Pt.1

Question 1

The heart is a . . . pump driving blood in . . . serial circuts known as ____ & ____ circuts

Answer 1

dual pump driving two serial circuts known as palmunary and systemic circuts

Question 2

What are capilariers?

Answer 2

smallest vessels where transport trnasfer occurs (at a slow rate)

Question 3

T/F Arteries carry oxygenated blood away from heart

Answer 3

False = arteries –> cary ANY type of blood AWAY from heart

Question 4

T/F Veins carry deoxygenated blood towards the heart

Answer 4

False - veins carry ANY type of blood TOWARDS heart

Question 5

____ in the heart & veins ensure one-way blood flow direction

Answer 5

valves

Question 6

What causes the initial pressure gradient in the cardiovascular system?

Answer 6

contraction of the heart

Question 7

Blood flows ____ its pressure gradient of __ P –> __ P

Answer 7

flows down gradient from high P to low P

Question 8

Does pressure decline/increase as you move across systemic sircut? Why or why not?

Answer 8

pressure decreases due to friction encountered

Question 9

What does driving pressure refer too?

Answer 9

the high pressure made in the ventricals

Question 10

How is pressure gradient created for blood flow?

Answer 10

contraction of ventricals

Question 11

T/F Blood flow is the same as the speed of blood

Answer 11

False - they are not the same

Question 12

Flow is ____ porportional to the pressure gradient

Answer 12

directly

Question 13

Flow is _____porportional to resistance

Answer 13

inversely

Question 14

The poiseuille’s eq. predicts?

Answer 14

how much resistance to flow will occur

Question 15

3 factors that determine resisatnace (& impact Poiseuille’s eq.?) Which is most important

Answer 15

1. Vessel length
2. Vessel viscosity
3. vessel radius = most important

Question 16

flow is ___ porportional to the 4th power of radius

Answer 16

directly

Question 17

resistance is ____ proportional to the 4th power of radius

Answer 17

inversly

Question 18

Which factor is most important in changing resistance?

Answer 18

vessel radius

Question 19

flow is _____ proportional to both the length of the vessel & the viscosity of the liquid

Answer 19

inversley

Question 20

T/F Flow rate is the same as velocity of flow

Answer 20

False = NOT the same

Question 21

velocity is ____ proportional to Q(flow rate)
[assuming A(radius) is constant]

Answer 21

directly

Question 22

velocity is ___ proportional to A (radius area)
[assuming Q is constant]

Answer 22

inversley