Introduction to mediastinum Flashcards

1
Q

Where are the borders of the superior mediastinum

A

From the sternal angle to the intersection of T4+5

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2
Q

Where is the transverse sinus

A

Behind the pulmonary trunk and ascending aorta, but in front of the vena cava

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3
Q

Where does the oblique sinus go

A

Goes between the pulmonary veins and to the left of the inferior vena cava

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4
Q

If you remove the pericardium, what can you see behind it

A

Descending aorta, oesophagus and the vagus nerve

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5
Q

What vein on the RHS comes from the neck and head region

A

Right internal jugular vein

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6
Q

What vein on the RHS comes from the right upper limb

A

Right subclavian vein

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7
Q

What do the right subclavian and the right internal jugular vein come together to form

A

Right Brachiocephalic vein

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8
Q

What vein on the LHS comes from the necking head region

A

Left internal jugular vein

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9
Q

What vein on the LHS comes from the left upper limb

A

Left subclavian vein

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10
Q

What do the subclavian and internal jugular vein on the LHS come together to form

A

Left brachiocephalic vein

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11
Q

What do the two brachiocephalic veins come together to form

A

superior vena cava

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12
Q

How many vessels come off the aorta

A

3

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13
Q

What does the brachiocephalic trunk come off

A

aorta

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14
Q

What does the brachiocephalic trunk divide into

A

Right common carotid artery and the right subclavian artery (to the head and upper limb)

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15
Q

What are the two other vessels coming off the aorta

A

Left common carotid artery and the left subclavian artery

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16
Q

Which veins do the intercostal spaces drain into

A

HEmiazygous and azygos veins

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17
Q

where do hemiazygous and azygos veins drain into

A

Vena cava

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18
Q

What does the sympathetic trunk do

A

Give off three splanchnic nerves which go through diaphragm and supply the different parts of the abdomen and the thorax itself

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19
Q

What does the Greater splanchnic nerve supply

20
Q

What does the Lesser splanchnic nerve supply

21
Q

what does the Least splanchnic nerve supply

22
Q

What openings are there in the diaphragm

A

Inferior Vena Cava
Descending aorta
Oesophagus

23
Q

What is behind what in the diaphragmatic openings

A

Inferior vena cana–> then oesophagus—> then thoracic aorta behind it

24
Q

Where are lymph nodes found

A

all over the trachea and veins

25
Where is the oesophagus found
Immediately behind the pericardium
26
What are the dentures found in the oesophagus (common sites of narrowing)
- Top one is where the aortic arch crosses it - Second one is where the left main bronchus crosses it - THird one is where the left atrium crosses it - Last one is where it goes through the diaphragm
27
Where do the vagus nerves lie
In front and behind the oesophagus
28
What is the main lymphatic drainage of the oesophagus
Thoracic duct
29
Where does the thoracic duct empty into
Into junction of left internal jugular and left subclavian veins
30
Where is the opening of the inferior vena cava in the diaphragm
T8
31
Where is the opening of the oesophagus in the diaphragm
T10
32
where Is the opening of the aortic in the diaphragm
T12
33
Where does the right phrenic nerve pass through the diaphragm
T8
34
Where does the left phrenic nerve pass through the diaphragm
T10
35
Where does the vagus nerve pass through the diaphragm
T10
36
Where does the thoracic duct pass through the diaphragm
T12
37
`where does the azygos system pass through the diaphragm
T12
38
Way to remember where the openings into the diaphragm are:
``` Vena Cava R Phrenic Oesophagus Left Phrenic Vagus Nerve Thoracic duct Aortic Hiatus Azygos system ``` Number of letters in the words corresponds to where they are ie 8 letters is T8
39
Which part of the mediastinum is the arch of the aorta found
Superior mediastinum
40
Which part of the mediastinum is the ascending aorta found
Middle mediastinum
41
Which part of the mediastinum is the descending thoracic aorta found
Posterior mediastinum
42
What does the middle of the mediastinum contain
Heart and pericardium
43
Does the posterior mediastinum contain the vagus nerve
YEs
44
What does the hamiazygos vein drain into
Azygos vein
45
What do the lower posterior intercostal arteries arise directly from
Thoracic aorta