Unit 1-Thorax-Part 2

Question 1

What part of the atrium contributes to the sternocoastal surface of the heart?

Answer 1

The right atrium

Question 2

What chamber of the heart is the most posterior?

Answer 2

The right atrium

Question 3

Where does the right atrium get blood from?

Answer 3

The SVC and IVC, coronary sinus and cardiac veins

Question 4

What drains the myocardium?

Answer 4

Coronary sinus and cardiac veins

Question 5

What chamber rests on the diaphragm?

Answer 5

The ventricle

Question 6

What comprises the largest portion of the anterior surface of the heart?

Answer 6

Right ventricle

Question 7

What are the Right and Left ventricles are separated by?

Answer 7

Interventricular septum.

Question 8

What does the pulmonary trunk arise from? Where does it ascend to?

Answer 8

Arises from the right ventricle and ascends anterior to the ascending aorta

Question 9

T/F

As you move from superior to inferior in the chest, the first structure of the heart you will see is the left atrium

Answer 9

True

Question 10

In which direction does the pulmonary trunk bend before it bifricates?

Answer 10

Bends to the left

Question 11

At what level does the pulmonary trunk bifricate?

Answer 11

At level of the sternal angle

Question 12

What does the pulmonary trunk bifricate into?

Answer 12

Pulmonary trunk bifurcates into the left and right pulmonary artery

Question 13

T/F

The right pulmonary artery is longer than the left

Answer 13

True

Question 14

T/F

Typically see the right pulmonary artery when we are inferior

Answer 14

True

Question 15

T/F

The pulmonary arteries enter the hilum.

Answer 15

True

Question 16

T/F

The carina is located at the same level as the pulmonary veins.

Answer 16

False; The carina is located at the same level as the pulmonary ARTERIES

Question 17

What shape is the left hilum?

Answer 17

Triangular shaped

Question 18

In the left hilum, what structure is most posterior?

Answer 18

Left Mainstem bronchus

Question 19

In the left hilum, what structure is most superior?

Answer 19

Pulmonary artery

Question 20

In the left hilum, what structure is most anterior?

Answer 20

Pulmonary vein

Question 21

In the right hilum, what structure is most posterior?

Answer 21

Right mainstem bronchus

Question 22

In the right hilum, what structure is most anterior?

Answer 22

Right superior pulmonary vein

Question 23

In the right hilum, what structure is in the middle?

Answer 23

Right pulmonary artery

Question 24

In the right hilum, what structure is most inferior?

Answer 24

Lower right pulmonary vein

Question 25

# T/F Mainstem bronchus are always the most posterior compared to the veins and arteries located in the hilum.

Answer 25

True

Question 26

What is the largest artery of the body?

Answer 26

Aorta

Question 27

Where does the ascending aorta originate?

Answer 27

At the base of the left ventricle

Question 28

What are the 3 dialations located at the root of the ascending aorta termed?

Answer 28

Aortic sinuses (left, right & posterior)-cusps

Question 29

What artery does the right aortic sinus give rise to?

Answer 29

The right coronary artery

Question 30

What artery does the left aortic sinus give rise to?

Answer 30

The left coronary artery

Question 31

# T/F The Aorta sits to the right of the midline

Answer 31

True

Question 32

At what level is the top of the aortic arch located at?

Answer 32

T3

Question 33

# T/F Right pulmonary artery starts more to the left of the midline

Answer 33

True

Question 34

In which direction does the right pulmonary artery travel in relation to the esophagus?

Answer 34

Anterior to the esophagus

Question 35

In which direction does the right pulmonary artery travel in relation to the mainstem bronchus?

Answer 35

To the right of the mainstem bronchus and anterior

Question 36

# T/F The right pulmonary artery is shorter and smaller than the left

Answer 36

False; The LEFT pulmonary artery is shorter and smaller than the right

Question 37

# T/F Aorta passes over the pulmonary trunk

Answer 37

True

Question 38

What chamber of the heart is most posterior?

Answer 38

The left atrium

Question 39

What is the largest branch of the aortic arch?

Answer 39

Brachiocephalic (Innominate) Trunk

Question 40

What are the 3 branches that come off the aortic arch?

Answer 40

1. Brachiocephalic (Innominate) Trunk 2. Left Common Carotid Artery 3. Left Subclavian Artery

Question 41

What does the Brachiocephalic (Innominate) Trunk branch into and at what level?

Answer 41

Bifurcates into Right Common Carotid & Right Subclavian arteries at the upper border of the right sternoclavicular joint

Question 42

# T/F The RCCA ascends the neck lateral to trachea.

Answer 42

True

Question 43

Where does the Left Common Carotid Artery arise from? Where does it ascend in relation to the trachea?

Answer 43

Arises just behind the left sternoclavicular joint Ascends the neck, lateral (left of) trachea

Question 44

Where does the Left Subclavian Artery arise from?

Answer 44

Arises from the AA, posterior and lateral to the LCCA

Question 45

# T/F The vessels of the aortic arch sit in an oblique fashion

Answer 45

True

Question 46

What is the SVC formed by?

Answer 46

Formed by the union of the venous drainage of the upper extremity and the head (left and right brachiocephalic veins)

Question 47

Where is the SVC in relation to the midline?

Answer 47

To the right of the midline

Question 48

Which Brachiocephalic vein is longer?

Answer 48

Left is longer

Question 49

Where does the L brachiocephalic vein travel in relation to the midline and the aorta prior to the union of the right and left?

Answer 49

Left Brachiocephalic Vein courses across the midline, anterior to the branches of the aorta.

Question 50

**Where does the right and left brachiocephalic vein become the SVC?**

Answer 50

Posterior to the costal cartilage of the first rib to form the SVC.

Question 51

# T/F Aortic structures are posterior to venous structures

Answer 51

True

Question 52

What forms the brachiocephalic veins?

Answer 52

The union of the subclavian and the internal jugular vein

Question 53

# T/F Subclavian veins receive blood from the external jugular veins

Answer 53

True

Question 54

# T/F SVC recieves blood from head, neck and arms via the subclavian, exteral and internal jugular veins.

Answer 54

True

Question 55

# T/F Carotid arteries look much larger (dialted) than the jugular veins

Answer 55

False; **Jugular veins** look much larger (dialted) than the carotid arteries

Question 56

What is the azygos vein formed by?

Answer 56

Formed by the union of ascending lumbar veins and right subcostal veins.

Question 57

Where is the union of the azygos vein?

Answer 57

Union occurs between L2 – T12.

Question 58

Where is the hemiazygos vein located in relation to the aorta?

Answer 58

Located left of the aorta

Question 59

Where is the azygos vein located in relation to the aorta?

Answer 59

To the right of the aorta

Question 60

Where does the azygos vein drain into?

Answer 60

The SVC