Unit 1-Thorax-Part 2 Flashcards
What part of the atrium contributes to the sternocoastal surface of the heart?
The right atrium
What chamber of the heart is the most posterior?
The right atrium
Where does the right atrium get blood from?
The SVC and IVC, coronary sinus and cardiac veins
What drains the myocardium?
Coronary sinus and cardiac veins
What chamber rests on the diaphragm?
The ventricle
What comprises the largest portion of the anterior surface of the heart?
Right ventricle
What are the Right and Left ventricles are separated by?
Interventricular septum.
What does the pulmonary trunk arise from? Where does it ascend to?
Arises from the right ventricle and ascends anterior to the ascending aorta
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
True
In which direction does the pulmonary trunk bend before it bifricates?
Bends to the left
At what level does the pulmonary trunk bifricate?
At level of the sternal angle
What does the pulmonary trunk bifricate into?
Pulmonary trunk bifurcates into the left and right pulmonary artery
T/F
The right pulmonary artery is longer than the left
True
T/F
Typically see the right pulmonary artery when we are inferior
True
T/F
The pulmonary arteries enter the hilum.
True
T/F
The carina is located at the same level as the pulmonary veins.
False; The carina is located at the same level as the pulmonary ARTERIES
What shape is the left hilum?
Triangular shaped
In the left hilum, what structure is most posterior?
Left Mainstem bronchus
In the left hilum, what structure is most superior?
Pulmonary artery
In the left hilum, what structure is most anterior?
Pulmonary vein
In the right hilum, what structure is most posterior?
Right mainstem bronchus
In the right hilum, what structure is most anterior?
Right superior pulmonary vein
In the right hilum, what structure is in the middle?
Right pulmonary artery
In the right hilum, what structure is most inferior?
Lower right pulmonary vein
T/F
Mainstem bronchus are always the most posterior compared to the veins and arteries located in the hilum.
True
What is the largest artery of the body?
Aorta
Where does the ascending aorta originate?
At the base of the left ventricle
What are the 3 dialations located at the root of the ascending aorta termed?
Aortic sinuses (left, right & posterior)-cusps
What artery does the right aortic sinus give rise to?
The right coronary artery
What artery does the left aortic sinus give rise to?
The left coronary artery
T/F
The Aorta sits to the right of the midline
True
At what level is the top of the aortic arch located at?
T3
T/F
Right pulmonary artery starts more to the left of the midline
True
In which direction does the right pulmonary artery travel in relation to the esophagus?
Anterior to the esophagus
In which direction does the right pulmonary artery travel in relation to the mainstem bronchus?
To the right of the mainstem bronchus and anterior
T/F
The right pulmonary artery is shorter and smaller than the left
False; The LEFT pulmonary artery is shorter and smaller than the right
T/F
Aorta passes over the pulmonary trunk
True
What chamber of the heart is most posterior?
The left atrium
What is the largest branch of the aortic arch?
Brachiocephalic (Innominate) Trunk
What are the 3 branches that come off the aortic arch?
- Brachiocephalic (Innominate) Trunk
- Left Common Carotid Artery
- Left Subclavian Artery
What does the Brachiocephalic (Innominate) Trunk branch into and at what level?
Bifurcates into Right Common Carotid & Right Subclavian arteries at the upper border of the right sternoclavicular joint
T/F
The RCCA ascends the neck lateral to trachea.
True
Where does the Left Common Carotid Artery arise from? Where does it ascend in relation to the trachea?
Arises just behind the left sternoclavicular joint
Ascends the neck, lateral (left of) trachea
Where does the Left Subclavian Artery arise from?
Arises from the AA, posterior and lateral to the LCCA
T/F
The vessels of the aortic arch sit in an oblique fashion
True
What is the SVC formed by?
Formed by the union of the venous drainage of the upper extremity and the head (left and right brachiocephalic veins)
Where is the SVC in relation to the midline?
To the right of the midline
Which Brachiocephalic vein is longer?
Left is longer
Where does the L brachiocephalic vein travel in relation to the midline and the aorta prior to the union of the right and left?
Left Brachiocephalic Vein courses across the midline, anterior to the branches of the aorta.
Where does the right and left brachiocephalic vein become the SVC?
Posterior to the costal cartilage of the first rib to form the SVC.
T/F
Aortic structures are posterior to venous structures
True
What forms the brachiocephalic veins?
The union of the subclavian and the internal jugular vein
T/F
Subclavian veins receive blood from the external jugular veins
True
T/F
SVC recieves blood from head, neck and arms via the subclavian, exteral and internal jugular veins.
True
T/F
Carotid arteries look much larger (dialted) than the jugular veins
False; Jugular veins look much larger (dialted) than the carotid arteries
What is the azygos vein formed by?
Formed by the union of ascending lumbar veins and right subcostal veins.
Where is the union of the azygos vein?
Union occurs between L2 – T12.
Where is the hemiazygos vein located in relation to the aorta?
Located left of the aorta
Where is the azygos vein located in relation to the aorta?
To the right of the aorta
Where does the azygos vein drain into?
The SVC
