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Phys 1 exam 3 > phase 3 > Flashcards

phase 3 Flashcards

1
Q

Which type of vessel transports blood under high pressure, with blood flowing at high velocity?

A

arteries

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2
Q

Which type of vessel is a conduit for capillaries and can either constrict or dilate?

A

arterioles

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3
Q

Which type of vessel exchanges fluid, nutrients, electrolytes, and hormones?

A

capillaries

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4
Q

Which type of vessel is permeable to water and other substances?

A

capillaries

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5
Q

Which type of vessel collects blood from capillaries?

A

venules

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6
Q

Which type of vessel is a conduit for transportation of blood back to the heart?

A

veins

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7
Q

Which type of vessel is a major reservoir for extra blood?

A

veins

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8
Q

Which type of vessel contains lots of smooth muscle to control blood flow into capillaries?

A

arterioles

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9
Q

What is the equation for blood flow velocity (V)?

A

V=F/A
V: velocity
F(Q): blood flow
A: cross sectional area

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10
Q

What type of relationship does blood flow velocity have with the total cross sectional area?

A

inverse relationship
-as A increases, F decreases
-A: cross sectional area
F: blood flow

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11
Q

At what point is the total cross sectional area the highest?

A

when the blood reaches the capillaries

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12
Q

As arteries branch, the total cross sectional area increases and speeds up blood flow velocity

A

false
-A increases, V slows down
-A: cross sectional area
-V: blood flow velocity

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13
Q

When veins merge, the velocity of blood flow increases and the total cross sectional area decreases

A

true

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14
Q

Right atrial pressure is the highest in the body

A

false
-lowest

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15
Q

What has the biggest influence on blood flow?

A

vessel radius

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16
Q

The difference between two ends of a vessel

A

pressure gradient

17
Q

Impediment to blood flow through a vessel

A

vascular resistance

18
Q

What is the equation for Ohm’s law?

A

-F=change in pressure/R
-change in pressure=F*R
-R=change in pressure/F

19
Q

What is the equation for Poiseuille’s law?

A

(pi*(change in pressure)r^4/8nl

20
Q

What is the equation for cardiac output?

A

CO=SV*HR

21
Q

What are the causes of turbulent blood flow (eddy currents)?

A

-high velocities
-sharp turns in circulation
-rough surfaces in circulation
-rapid narrowing of vessels

22
Q

What is the equation for Reynold’s number?

A

Re=vdp/n
-v=velocity
-d=diameter
-p=density
-n=viscosity

23
Q

What is the equation for MAP?

A

MAP=(SBP+DVP+DVP)/3

24
Q

What is the TPR in the systemic circuit?

A

change in P=100mmHg

25
Q

What is the TPR in the pulmonary circuit?

A

change in P=14mmHg

26
Q

The measure of blood flow given a pressure gradient

A

conductance
-inversely proportional to resistance

27
Q

What is the equation for conductance?

A

Conductance= 1/Resistance

Phys 1 exam 3 (1 decks)

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