anatomy of the heart
TRANSCRIPT
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Anatomy of the HeartIan N. Cost
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Where the Heart is
Right atrium is positioned roughly along the midline of the body
Generalized borders:Esophagus posterior Substernal fat anteriorLiver inferiorLungs laterallyGreat vessels superior
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Orientations
Pleura
Pericardial sac
Sup. vena cava
Arch of aorta
Subclavian A
Vagus N
Phrenic N
Pulmonary trunk
Brachiocephalic A
L common carotid A
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The Pericardial Sac
Fibrous parietal pericardium(superficial)
Serous parietal pericardium(deep)
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Pericardial Sinuses
Transverse pericardial sinus: site of arterial vesselsOblique pericardial sinus: site of pulmonary veins
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Pericardium and Cardiac Tamponade
• Inflamed pericardium: Pericarditis• Removal of fluid: Pericardiocentisis• Mechanical constraint: Cardiac
Tamponade ContrastFluid
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Coronary Arteries
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Coronary Veins
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6 Most Common Sites of Arterial Occlusion
23
1
(1-3 account for 85%)
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Sympathetic trunk
Superior cervical ganglion
Ventral ramus of spinal nerveDorsal root
Cardiac nerve
T2
Referred pain from Heart
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Coronary BypassThree Main Sources:
• Veins (Saphenous is common)• Internal Thoracic (Mammary) A.• Polyurethane supported
epithelial cells
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Conducting system of mammalian heart.
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Conditions of the Heart: Fetal to Adult Circulation
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1. Overriding aorta
2. Pulmonary stenosis
3. VSD4. Right side hypertrophy
Patent DuctusArteriosus
Conditions of the Heart: Tetralogy of Fallot
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Fetal Neonatal
Right atrium:
High pressure
Left atrium:
Low pressure
Septum secundum
Septum primum
Foramen ovale
Blood flow
Septum secundum
Septum primum
Fossa ovalis
Left atrium:
High pressure
Right atrium:
Low pressure
Conditions of the Heart: Foramen Ovale