Section 2 Lecture 2 Flashcards Preview

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Flashcards in Section 2 Lecture 2 Deck (22)
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1
Q

how is pressure related to both volume and stiffness?

A

proportionally P = V X Stiffness

2
Q

How is pressure related to volume?

A

proportional relationship P = V/Compliance

3
Q

How is pressure related to compliance?

A

inverse relationship

4
Q

stiffness =

A

1/compliance = delta P (trans)/ delta V(s)

5
Q

Q =

A

delta P/ R

6
Q

mean circulatory pressure:

A

10 mmHG

7
Q

How much more compliant is the venous system than the arterial system?

A

19X more compliant

8
Q

T or F? most of the stressed volume resides on the arterial side of the system.

A

F. Venous side

9
Q

T or F? For a pressure increase in the arteriole system there must be a compensatory decrease of the same pressure on the venous side.

A

F. Pressure increases much more per a given volume because there is much less compliance in the arterial system than the venous system

10
Q

Relationship (equation) bw pressure, volume and compliance:

A

P = V/ Compliance

11
Q

If the pressure increases on the arterial side 90 mm Hg (from 10 - 100), what will the corresponding decrease in venous pressure be?

A
  • mm Hg
12
Q

Change in arterial pressure with each pump of the heart

A

about 5 mm Hg

13
Q

Change in venous pressure with each pump of the heart

A

about 2.5 mm Hg

14
Q

Standing pressure of the right atrium:

A

2 mmHG

15
Q

Standing pressure of the pulmonary artery:

A

20 mmHG

16
Q

Standing pressure of the left atrium:

A

5 mm Hg

17
Q

Standing pressure of the aorta:

A

95 mm Hg

18
Q

Pressure gradient bw the pulmonary artery and the left atrium:

A

15 mm Hg

19
Q

Total change in pressure of the system:

A

93 mm Hg

20
Q

Where is there a higher pressure, the right atrium or the right ventricle?

A

right atrium

21
Q

How much pressure does the R side of the heart exert to pump blood through the lungs?

A

about 30 mm Hg

22
Q

How much pressure does the L side of the heart exert to pump blood through systemic circulation?

A

about 110 mm Hg