Posterior Mediastinum Flashcards

1
Q

Give the boundaries of the posterior mediastinum

A

superior - transverse thoracic plane
anterior - post wall of pericardium and slope of diaphragm
posterior - bodies of T5-12

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2
Q

Detail venous drainage of the right side of the thoracic wall

A

posterior intercostal veins directly to azygos vein

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3
Q

what side are the hemiazygos and accessory hemiazygos veins found on

A

left side

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4
Q

which posterior intercostal drains directly to the azygos (on the right side)

A

the first

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5
Q

describe the venous drainage of the left thoracic wall

A

1-4 posterior intercostal spaces drain to left BCV
5-8 drain to accessory hemiazygos vein
9-11 drain to hemiazygos vein

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6
Q

where does the thoracic duct drain lymph from

A

lower limbs, pelvis, abdomen and left of thoracic cavity

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7
Q

describe the location of the thoracic duct

A

between the thoracic aorta and azygos vein
on the bodies of thoracic vertebrae

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8
Q

where does the thoracic duct empty

A

left venous angle
junction of left internal jugular and left subclavian veins

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9
Q

where does sympathetic outflow occur in the spinal cord

A

T1-L2/3

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10
Q

in what direction do white rami communicans travel

A

spinal cord to sympathetic chain

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11
Q

are grey rami communicans myelinated

A

No, white are

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12
Q

Give the spinal levels of each set of splanchnic nerves

A

greater - T5-9 of sympathetic chain
lesser - ganglia, T10 & 11
least - T12 ganglion

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13
Q

what is the action of the splanchnic nerves

A

sympathetic innervation to the abdominal viscera

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14
Q

synapse locations of the splanchnic nerves

A

greater - ganglia at coeliac axis and SMA
lesser - ganglia at SMA and aorticorenal ganglia
least - aorticorenal ganglia

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15
Q

what passes through the caval opening of the diaphragm (T8)

A

IVC

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16
Q

what structures pass through the oesophageal hiatus of the diaphragm

A

oesophagus and vagus nerves

17
Q

what structures pass through the aortic hiatus of the diaphragm

A

aorta, thoracic duct and azygos vein

18
Q

from medial to lateral, name the ligaments of the diaphragm

A

median arcuate (associated w/ aortic hiatus)
medial arcuate
lateral arcuate

19
Q

what other structures pass at T12 (not through aortic hiatus)

A

greater and lesser splanchnic nerves via openings in crura
least splanchnic and sympathetic trunk behind medial arcuate ligament