Exam #3: Heart I Flashcards
What is the Pericardium? Where does it attach & what does it contain?
- Double-walled fibroserous sac around the heart
- Attached to the sternum
- Contains the phrenic nerve
What is the Fibrous Pericardium?
- Fuses the pericardium to the central tendon of the diaphragm (anchor)
- V. inelastic/ thick
What is the Serous Pericardium?
- Thin capillary layer of oily fluid that prevents friction
What is the Parietal Pericardium?
Fused to the internal surface of the fibrous pericardium
What is the Visceral Pericardium?
Epicardium
What is the Pericardial Cavity?
- Potential space between the parietal pericardium and visceral layer
- Contains a supply of serous fluid
Transverse Pericardial Sinus
- Located posterior to the aorta & pulmonary trunk, but anterior to the SVC
- A space where a finger can be inserted
- Attachment point for CABG
Oblique Pericardial Sinus
- A wide recess posterior to the heart
- Anterior to the SVC, IVC, & pulmonary veins
Pericardiocentesis
- Insert needle into infrasternal angle (left of xiphoid process) or lingula to drain the pericardial sac in cardiac tamponade
Pericardial Effusion
Fluid accumulation in the percaridal sac
Apex
- Left Ventricle
- Located @ the left 5th intercostal space
- Midclavicular line
Base
- Posterior portion of the heart that sits toward the vertebral column
- Esophagus is just posterior between heart & thoracic vertebrae
- Left atrium & sinus venarum
Sinus Venarum
Smooth portion of the right ventricle
Sternocostal Surface
- Anterior surface of the heart
- Right ventricle (sits just posterior to the sternum)
Diaphragmatic Surface
- Portion of the heart that sits on the central tendon
- Left ventricle mostly, w/ minor contribution from the right ventricle
Right Border
- Right 3rd costal cartilage to right 6th costal cartilage
- Right atrium
Inferior Border
- Right 6th costal cartilage to left 5th intercostal space
- Right ventricle & apex of left ventricle
Left Border
- Left 5th intercostal space to left 2nd intercostal space
- Left ventricle & left auricle
Superior Border
- Left 2nd costal cartilage to right 3rd costal cartilage
- Left & Right Auricle
Left Auricle
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