TMA The Superior Mediastinum Flashcards

1
Q

What is the central compartment of the thoracic cavity

A

mediastinum

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2
Q

What is the mediastinum divided into

A

superior and inferior mediastinum

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3
Q

Where does the superior mediastinum terminate

A

thoracic aperture

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4
Q

Where does the inferior mediastinum terminate

A

diaphragm

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5
Q

What are the divisions of the inferior mediastinum

A

anterior, middle and posterior

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6
Q

What is the border of the superior mediastinum

A

thoracic inlet

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7
Q

What is the superior mediastinum bordered by on the anterior side

A

manubrium of the sternum

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8
Q

What is the superior mediastinum bordered by on the posterior side

A

vertebral bodies of T1-4

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9
Q

What is the superior mediastinum bordered by laterally

A

pleurae of the lungs

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10
Q

True or False - in the mediastinum the main blood vessels branches arise before passing through the superior thoracic aperture

A

true

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11
Q

What are the three major branches of the aortic arch

A

brachiocephalic artery, left common carotid artery, left subclavian artery

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12
Q

What tributaries of the superior vena cava are located in the superior mediastinum

A

brachiocephalic, left superior intercostal, supreme intercostal and azygos veins

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13
Q

What does the left superior intercostal vein drain into

A

left brachiocephalic vein

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14
Q

What does the azygos vein receive blood from

A

right posterior intercostal vein

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15
Q

What does the left intercostal vein drain into

A

hemiazygos and accessory hemiazygos veins

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16
Q

What does the right vagus nerve run parallel to

A

trachea

17
Q

Where does the left recurrent nerve arise from

A

left vagus nerve

18
Q

What passes anteriorly to the hilum of the lungs

A

phrenic nerve

19
Q

What do cardiac nerves form

A

superficial and deep cardiac plexuses

20
Q

Where does the sympathetic trunk run

A

bilaterally to vertebral bodies down the vertebral column

21
Q

What is the most anterior structure located in the superior mediastinum

A

thymus gland

22
Q

What does the trachea bifurcate into

A

primary bronchi

23
Q

What muscles originate from the posterior surface of the manubrium

A

sternohyoid and sternthyroid