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What is the surface markings of the heart?
- 2nd ICS; left of sternum
- 3rd CC; on the right
- 6th CC; on the right
- 5th ICS; left MCL
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What are the two parts of the mediastinum?
- Superior
- Inferior
- Inferior is divided into posterior, middle, and anterior
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What are the layers of the epicardium?
- Fibrous
- Serous (Parietal and visceral)
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This is a double-walled sac which contains the heart.
Pericardium
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This is the space between the parietal pericardium and visceral pericardium
pericardial cavity
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What forms the right border of the heart?
Right atrium
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What forms the anterior border of the heart?
- Right ventricle
- Apex of left ventricle
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What forms the base (posterior) of the heart?
left atrium
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What forms the left margin of the heart?
left ventricle
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The most inferior and lateral part of the heart where you can hear a beat
- Apex beat
- it should be 5th ICS MCL Left
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What are branches of RCA?
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Where does the RCA arise from? (hint: cusps)
Sinus of anterior aortic cusp
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Where does the LCA arise from?
Sinus of the Left Posterior Aortic Cusp
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What are the branches of the LCA?
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Which branch supplies the cardiac muscle?
LCA
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Which branch supplies the electrical system of the heart?
RCA
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What is the main venous drainage of the heart?
- Great, Middle, Small cardiac veins --> Coronary sinus --> right atrium
- Anterior vein --> right atrium
- Thebesian Veins --> chamber
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By which arteries do the Great, Middle, and Small cardiac veins run?
- GCV with the AIVA
- MCV with the PIVA
- SCV with the marginal
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What is blood supply to left atrium?
Circumflex
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What supplies the apex of the heart?
PIV
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What vertebral levels is the atrium?
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This seperates the 2 parts of the atrium (primitive and true atrium)
Crista terminalis
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This is found where the sulcus terminalis meets the SVC
SA node
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External groove between SVC and IVC
sulcus terminalis
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This node is found in the inter-atrial septum just above the coronary sinus.
Av node
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