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EXAM 3
Lecture 3: Mediastinum
31
Anatomy
Graduate
10/06/2013

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Cards

Term
What is the boundary between the superior and inferior mediastinum?
Definition
Transverse Thoracic Plane
Lower border of T4
Term
What are the contents of the superior mediastinum?
Anterior to Posterior
Definition
TVATEL
Thymus
Braciocephalic v. and SVC
Arch of Aorta and its branches
Trachea
Espohagus
Lympahtics-Thoracic Duct
Term
What forms the brachiocephalic veins?
Definition
The union of the IJ and subclavian v.
Term
An obstruction of what veins would lead to unilateral edema of the face, neck, and arms?
Definition
IJ/subclavian
Term
An obstruction of what veins would lead to bilateral face, neck, and upper limb edema?
Definition
SVC
Term
SVC is formed by?
Definition
Union of two brachiocephalic veins
Term
What does the SVC do at the transverse thoracic plane?
Definition
Pieces the pericardium
Term
What pass through the trachea-esohpagal groove?
Definition
Recurrent laryngeal n. given off the vagus n.
Term
Which nerve hooks around the right subclavian a.?
Definition
Right recurrent laryngeal n.
Term
Which n. hooks around the ligamentum arteriosum (and arch of the aorta)
Definition
Left recurrent laryngeal n.
Term
what n. supplies sensory and motor to the diaphragm and passes anterior to lung roots?
Definition
Phrenic
Term
what n. supplies PS to thoracic viscera and passes posterior to lung roots?
Definition
vagus n.
Term
anterior and posterior vagal trunks enter abdomen through??
Definition
Espohageal hiatus
T10
Term
Decending thoracic aorta is in what mediastinum?
Definition
Posterior
Term
what happenes at the aortic hiatus T12?
Definition
decesning thoracic aorta becomes abdominal aorta
Term
Esophagus belongs in what mediastinum?
Its relationship in those mediastinums
Definition
Superior: anterior to trachea
Posteior: anterior to left atrium
Term
Esophagus at diff. levels and where foreign bodies can lodge
C6
T4
T6
T10
Definition
C6: inferior pharyngeal constrictor
T4: crossed by aortic arch
T6: crossed by left bronchus
T10: constricted at its hiatus
Term
What mediastinum is the thoracic duct in??
Definition
Posterior and superior
Term
Where does the thoracic duct originate in abdomen? Vertebral level? Enters Thorax? Terminates
Definition
Cisterna chili L1 Enters thorax through aortic hiatus Terminates at left venous angle
Term
when does the azygos v join with the SVA?
Definition
Transverse thoracic plane
Term
azygos v. enters the thorax via??
Definition
T12:aortic hiatus
Term
This drains the right 5th to 11th posterior intercostal v. directly
and the 2nd to 4th via the right superior intercostal v.
Definition
Azygos v.
Term
This vein enters the thorax by piercing the left crus of the disphragm and drains the left 9th to 11th posterior intercostal v. joins the azygos v.
Definition
hemiazygos v.
Term
this vein drains the left 5th-8th posterior intercostal veins and joins the azygos v.
Definition
accessory azygos v.
Term
1st posterior intercostal veins from both sides drain directly into which vein
Definition
brachiocephalic veins
Term
Right 2nd to 4th posterior intercostal veins drain into __________
Definition
superior intercostal veins
Term
The right superior intercostal vein drains into the ____
Definition
azygos v.
Term
the left superior intercostal vein drains into the ______
Definition
brachiocephalic v.
Term
Present in T1-L2 spinal segments. Belong to sympathetic nervous system and contain preganglionic motor and sensory fibers
Definition
White Rami Communicantis
Term
Present in all spinal segements. Belong to sympathetic nervous system and contain postganglionic motor fibers
Definition
Grey Rami Communicantes
Term
Medial branches from the sympathetic ganglia and contain preganglionic motor and sensory fibers. Carry sympathetic motor and pain fibers to and from abdominal organs
Definition
Splanchnic nerves.
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