Thoracic Veins Anatomy

What is the primary function of the brachiocephalic veins?

To drain the upper limbs, head, and neck (correct)
To drain the anterior wall of the abdomen
To drain the upper part of the posterior wall of the thorax
To drain the lower limbs

Where do the two brachiocephalic veins unite to form?

The IVC
The SVC (correct)
The aorta
The pulmonary artery

What is the relation of the right brachiocephalic vein to the right phrenic nerve?

It lies lateral to the right phrenic nerve
It lies medial to the right phrenic nerve
It lies anterior to the right phrenic nerve
It lies posterior to the right phrenic nerve (correct)

At what level do the two brachiocephalic veins end?

Behind the lower border of the 1st right costal cartilage (B) Signup and view all the answers

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 (A) Signup and view all the answers

What separates the right brachiocephalic vein from the right pleura and lung?

The right pleural space (C) Signup and view all the answers

What is located between the right pleura and lung and the esophagus on its night side?

Right phrenic nerve (B) Signup and view all the answers

Which structure is located between the left side of the esophagus and the brachiocephalic artery?

Right vagus nerve (B) Signup and view all the answers

What is a tributary of the esophagus?

Right internal thoracic vein (D) Signup and view all the answers

Which of the following is NOT a tributary of the esophagus?

Right subclavian artery (B) Signup and view all the answers

What is the other tributary of the esophagus mentioned in the text?

Right 1st posterior intercostal vein (C) Signup and view all the answers

What is the direction of the left brachiocephalic vein?

Obliquely downwards and to the right (A) Signup and view all the answers

What structure does the left brachiocephalic vein cross in front of?

The origins of the 3 branches of the aortic arch (C) Signup and view all the answers

What is the location of the left brachiocephalic vein in the mediastinum?

In the superior mediastinum (D) Signup and view all the answers

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 (B) Signup and view all the answers

What is the surface anatomy of the left brachiocephalic vein?

It is in front of the upper % of the manubrium sterni (C) Signup and view all the answers

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 (B) Signup and view all the answers

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 (D) Signup and view all the answers

On its left side, what is the S.V.C. related to?

Brachiocephalic artery and trachea (A) Signup and view all the answers

How many tributaries does the S.V.C. have?

One (C) Signup and view all the answers

At what level does the azygos vein enter the S.V.C.?

At the level of the 2nd right costal cartilage (D) Signup and view all the answers

What is the relation of the Superior Vena Cava at its beginning?

Below the bifurcation of the trachea (A) Signup and view all the answers

How long is the Superior Vena Cava approximately?

2 inches (5 cm) long (C) Signup and view all the answers

Where does the Superior Vena Cava end?

Into the right atrium (A) Signup and view all the answers

What is the location of the upper part of the Superior Vena Cava?

Superior mediastinum (C) Signup and view all the answers

What is the function of the Superior Vena Cava?

Drains venous blood from the head and neck (C) Signup and view all the answers

What forms the Superior Vena Cava?

Union of the two brachiocephalic veins (C) Signup and view all the answers