27 Questions
What is the primary function of the brachiocephalic veins?
To drain the upper limbs, head, and neck
Where do the two brachiocephalic veins unite to form?
The SVC
What is the relation of the right brachiocephalic vein to the right phrenic nerve?
It lies posterior to the right phrenic nerve
At what level do the two brachiocephalic veins end?
Behind the lower border of the 1st right costal cartilage
What is the surface anatomy of the right brachiocephalic vein?
It extends from the medial end of the right clavicle to the lower margin of the 1st right costal cartilage
What separates the right brachiocephalic vein from the right pleura and lung?
The right pleural space
What is located between the right pleura and lung and the esophagus on its night side?
Right phrenic nerve
Which structure is located between the left side of the esophagus and the brachiocephalic artery?
Right vagus nerve
What is a tributary of the esophagus?
Right internal thoracic vein
Which of the following is NOT a tributary of the esophagus?
Right subclavian artery
What is the other tributary of the esophagus mentioned in the text?
Right 1st posterior intercostal vein
What is the direction of the left brachiocephalic vein?
Obliquely downwards and to the right
What structure does the left brachiocephalic vein cross in front of?
The origins of the 3 branches of the aortic arch
What is the location of the left brachiocephalic vein in the mediastinum?
In the superior mediastinum
What is the relationship between the left brachiocephalic vein and the trachea?
The left brachiocephalic vein is separated from the trachea by the origins of the 3 branches of the aortic arch
What is the surface anatomy of the left brachiocephalic vein?
It is in front of the upper % of the manubrium sterni
What is the relation of the S.V.C. to the right vagus?
It is related to the right vagus on the right side of the trachea
What is the relation of the S.V.C. to the right pleura and lung?
It is separated from them by the right phrenic nerve
On its left side, what is the S.V.C. related to?
Brachiocephalic artery and trachea
How many tributaries does the S.V.C. have?
One
At what level does the azygos vein enter the S.V.C.?
At the level of the 2nd right costal cartilage
What is the relation of the Superior Vena Cava at its beginning?
Below the bifurcation of the trachea
How long is the Superior Vena Cava approximately?
2 inches (5 cm) long
Where does the Superior Vena Cava end?
Into the right atrium
What is the location of the upper part of the Superior Vena Cava?
Superior mediastinum
What is the function of the Superior Vena Cava?
Drains venous blood from the head and neck
What forms the Superior Vena Cava?
Union of the two brachiocephalic veins
Test your knowledge of the major veins of the thorax, including their origin, course, and tributaries. Learn about the surface anatomy of the brachiocephalic veins and their role in draining the upper limbs, head, and neck. Assess your understanding of the thoracic veins and their connections.
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