Boards 1: Anatomy Flashcards

1
Q

Tube enclosing the pulmonary artery and aorta

A

Arterial mesocardium

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

Tube enclosing the SVC, IVC, and four pulmonary veins

A

Venous mesocardium

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

What are the three layers covering the heart

A

Pericardium: (outer fibrous, parietal serous, visceral serous (epicardium))
Myocardium
Endocardium

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

What part of the conduction system is contained in the moderator band?

A

Right bundle branch

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

The celiac artery divides into what three arteries?

A

Hepatic artery
Left gastric artery
Splenic artery

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

Order of arteries from shoulder to hand

A

Subclavian–>axial–>brachial–>radial and ulnar–>palmar–>digital

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

Order of arteries from groin to toes

A

Common iliac–>external iliac–>femoral–>popliteal–>tibial–>dorsal pedis

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

Nine arteries of the Circle of Willis

A
Anterior communicating
Left anterior cerebral
Right anterior cerebral
Left middle cerebral
Right middle cerebral
Left posterior communicating
Right posterior communicating
Left posterior cerebral
Right posterior cerebral
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Flow of drainage through hepatic portal system

A

Gastric vein–>portal vein–>liver–>hepatic vein–>IVC

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

What does the azygos vein drain?

A

Right posterior intercostal, esophageal, mediastinal, and pericardial veins

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

What does the accessory azygos vein drain?

A

Upper left posterior intercostal veins

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

What does the hemiazygous vein drain?

A

Lower pert posterior intercostal and esophageal veins

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

Three leaflets of the tricuspid valve

A

Anterior
Posterior
Septal

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

Parent vessels for the circle of Willis

A

Vertebral artery and internal carotid

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

What does the left thoracic duct drain

A

Lymph from left thorax and everything below diaphragm

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

What does the right thoracic duct drain

A

Right thorax

17
Q

Compare the distensibility of arteries and veins

A

Veins are 8 times more distensible than arteries

18
Q

Compare the distensibility of pulmonary vs systemic arteries

A

Pulmonary arteries are 6times more distensible than systemic arteries

19
Q

Compare the distensibility of pulmonary vs systemic veins

A

Approximately the same distensibility

20
Q

Equations for compliance

A

Compliance=change in volume/change in pressure

Compliance= distensibility*initial volume

21
Q

Arterial compliance

A

2mL/mmHg

22
Q

Venous compliance

A

100mL/mmHg

23
Q

Compare the two pulses created by the heart

A

The pressure pulse precedes the blood pulse

Actual movement of blood lags because inertia of blood in aorta must be overcome

In aorta, velocity of pressure wave 15x that of blood movement

24
Q

Bronchial circulation flow and pressure

A

High pressure low flow

25
Q

Pulmonary circulation flow and pressure

A

High flow, low pressure

26
Q

Affect of oxygen less than 73mmHg in alveoli

A

Constriction so blood flow is redirected to alveoli that is exchanging gas more efficiently

(In systemic circulation dilation happens if low oxygenation)

27
Q

Pulmonary capillary pressure at the top of the lungs

A

15mmHg lower than pressure at heart (so subtract 15)

28
Q

Pulmonary capillary pressure at bottom of Lungs

A

8mmHg higher than that of heart (so add8)

29
Q

Three zones of blood flow through lungs

A

Zone 1: no blood flow (pulm alveolar always greater than pulm capillary pressure)
Zone 2: flow during systole, not diastole (bc capillary pressure higher during systole)
Zone 3: continuous blood flow (capillary pressure always greater than alveolar)

30
Q

Blood flow distribution through the three zones in normal lung

A

Apex of lung: zone 2

Rest of lung: zone 3

31
Q

3 ways lungs compensate for increased CO during exercise

A
  1. Increase number of open capillaries
  2. Dilation of capillaries
  3. Increasing pulmonary artery pressure
32
Q

3 differences between pulmonary and systemic capillaries

A
  1. Pulmonary capillary pressure significantly lower (7vs17)
  2. Pulmonary interstitial pressure more negative
  3. Pulmonary capillaries leaky to allow more protein to escape interstitial fluid so oncotic reassure is higher
33
Q

Most common causes of pulmonary edema

A

Left heart failure

Mitral valve regurgitation

34
Q

Pulmonary capillary pressure required to begin to cause pulmonary edema

A

> 28mmHg (normal is 7mmHg)

35
Q

Pulmonary capillary pressure causing lethal pulmonary edema

A

> 53mmHg would cause death in 30 minutes

36
Q

How can people live with pulmonary capillary pressure greater than 40mmHg

A

Lungs compensate over 2 weeks by expansion of lymphatic blood vessels over 10x