Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

AS-II Module-II > Mesiastinum > Flashcards

Mesiastinum Flashcards

1
Q

Major parts of the thoracic cavity

A
  • 2 pulmonary cavities where the lungs occupy

- The mediastinum: the central compartment

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

Major subdivisions of the mediastinum

A
  • Superior Mediastinum
  • Inferior Mediastinum
    • Anterior Mediastinum
    • Middle Mediastinum
    • Posterior Mediastinum
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Boundaries of the superior mediastinum

A

(superior to inferior)
-Extends from an oblique plane thorugh the jugular notch and T1 vertebra to a horizontal plane through sternal angle and T4/5 intervertebral disc

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

Boundaries of the inferior mediastinum

A

(Superior to inferior)

-Extends from the sternal angle and T4/5 intervertebral disc to the diaphragm.

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

Parts of the superior mediastinum (selected contents for this course)

A
  • Thymus
  • “Great” vessels
  • Vagus and phrenic nerves
  • Trachea
  • Esophagus
  • Thoracic duct
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Thymus(location and function)

A

-At the root of the neck, superior and anterior mediastinum
-Most anterior structure in the superior mediastinum
immediately deep to the manubrium
-Primary lymphoid organ

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

“Great” arteries(list)

A
  • Arch of the aorta
    • Brachiocephalic trunk
    • Left common carotid artery
    • Left subclavian artery
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

“Great” Veins(list)

A
  • R & L brachiocephalic veins(BCV)

- Superior vena cava(SVC)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Arch of the Aorta(Connections and location)

A
  • Begins at the level of sternal angle, posterior to the 2nd right costosternal joint.
  • Ascends anterior to the right pulmonary artery and trachea.
  • It is the continuation of the ascending aorta then continues into the descending thoracic aorta
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

List the aortic arch branches in order

A
  • Brachiocephalic trunk
  • Left common carotid artery
  • Left subclavian artery
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Branches of the Brachiocephalic trunk

A
  • Right subclavian artery

- Right common carotid artery

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

What veins drain into the brachiocephalic veins(BCV) and where does it occur?

A

The internal jugular and subclavian veins.

posterior to the sternoclavicular joints

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

Where do the BCVs join and where?

A
  • The right and left BCVs join into the superior vena cava

- At the level of the 1st right costal cartilage

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

Superior vena cava(Location)

A

Forms at the 1st costal cartilage, passes through the middle of the mediastinum and terminates at the level of the 3rd costal cartilage

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

Left vagus nerve(Location)

A

-Enters into the superior mediastinum posterior to the L brachiocephalic vein, then anterior to the aortic arch and posterior to the root of the lung (in the posterior mediastinum now)

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

Branches of Left vagus nerve and where it branches

A
  • some branches contribute to the pulmonary plexus.
  • some pass inferiorly contribute to the esophageal plexus and anterior vagal trunk
  • The left recurrent laryngeal nerve branches off at the aortic arch and ascends between the trachea and esophagus
17
Q

Right vagus nerve (location)

A

-Enters into the superior mediastinum posterior to the brachiocephalic vein, then posterior to the superior vena cava and along the right margin of the trachea then posterior to the root of the lung

18
Q

Branches of right vagus nerve and where it branches

A

some branches contribute to the pulmonary plexus other pass inferiorly to the esophageal plexus and posterior vagal trunk
-The right recurrent laryngeal nerve does NOT branch off in the mediastinum

19
Q

Phrenic nerve(motor supply, sensory supply)

A
  • the only motor supply is to the diaphragm

- sensory branches to the pericardium, mediastinal pleura and diaphragm

20
Q

Phrenic nerve (location ) and what runs with it?

A
  • Pass anterior to the subclavian artery and posterior to he subclavian vein. then enters the superior mediastinum.
  • Pericardiacophrenic vessels travel wit the phrenic nerves. All 3 pass anterior to the root of the lung the descend into the middle mediastinum between the fibrous pericardium and the mediastinal pleura
21
Q

Where do the trachea and esophagus start?

A

at C6

22
Q

Trachea(location)

A

courses anterior to the esophagus and ends at sternal angle (does not enter the inferior mediastinum)

23
Q

Esophagus(location)

A

Passes from the superior to the posterior inferior mediastinum to reach the diaphragm at T10 and ends at T11

24
Q

Function of the thoracic duct

A

Conveys most lymph of the body to the venous system except the upper right quadrant (which includes the right side of the neck, head, thoracic wall/cavity and UE)

25
Q

Location of the thoracic duct

A
  • Extends from the cisterna chili 9T12 to the root of the neck.
  • Ascends in the posterior mediastinum , posterior to the esophagus, between the descending aorta and azygous vein
  • it also takes and oblique course to the left enters the superior mediastinum where it passes to the junction of the left subclavian vein and IJV, where it terminates
26
Q

Which mediastinum subdivision is the smallest?

A

The anterior mediastinum

27
Q

Where is the anterior mediastinum located?

A

Between the sternum body and the pericardium

28
Q

What are the contents of the anterior mediastinum?

A

Thymus
Loose connective tissue and fat
Lymphatic vessels and lymph nodes
mediastinal branches of the internal thoracic vessels

29
Q

What are the contents of the middle mediastinum?

A
  • Heart
  • Ascending aorta
  • inferior part of the superior vena cava
  • terminal portion oft eh azygous vein
  • primary bronchi
  • L and right pulmonary arteries
  • pulmonary trunk
  • pulmonary veins
  • phrenic nerves
  • pericardiacophrenic vessels
  • cardiac plexus
  • inferior vena cava
  • lymph nodes
30
Q

Contents of the posterior mediastinum

A
  • Thoracic duct
  • esophagus and esophageal plexus
  • thoracic aorta
  • azygous and hemiazygous veins
  • sympathetic chain
  • greater, lesser and least splanchnic nerve
31
Q

Thoracic aorta(start, end and branches)

A 
Starts at T4/T5/ IV disk, ends at T12 where it becomes the abdominal aorta
Courses through the left of the esophagus 
Branches:
-posterior intercostal arteries
-esophageal arteries
-bronchial arteries 
-mediastinal branches 
-pericardial branches 
-superior phrenic arteries
32
Q

Splanchnic nerves and their locations of formation

A

Greater splanchnic nerve - T5-T9
Lesser splanchnic T10-T11
Least splanchnic- T12

AS-II Module-II (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions