Heart Flashcards
What are the Surfaces of the Heart and what comprises those surfaces?
- Anterior (Sternocostal): Both Ventricles, Right more than left
- Posterior (Base): Left Atrium and 4 pulmonary arteries
- Inferior (Diaphragmatic): Both Ventricles, Left more than right
What are the Margins of the Heart?
Right and Left Outline
Where is the Apex of the Heart Located?
In the 5th Intercostal Space, 3 and a half inches from the midline, at the Midclavicular Line (Medial to the Left nipple)
What composes the Fibroserous Membrane of the Heart?
- Fibrous Pericardium
- Parietal Pericardium
- Visceral Pericardium
What is the fibrous CT surrounding the heart called?
The Fibrous Pericardium
Where is the Fibrous Pericardium located?
It is glued to the parietal pleura on each side, posterior to the esophagus, anterior to the anterior mediastinal fat, and Superior to the endothoracic fascia on the diaphragm
Pericarditis
Inflammation of the Pericardium from external insult or internal pathology
Pericardial Effusion
Fluid in the Pericardial Cavity
What is a Hemopericardium and what may it result in?
- Blood in the Pericardial Cavity
- May result in Cardiac Tamponade
Cardiac Tamponade
Condition in which the heart stops beating because of the excessive amount of blood and thus pressure in the pericardial cavity
Transverse Pericardial Sinus
Space behind Pulmonary Trunk and Arch of Aorta where ligature or clamp is placed, tubes of a coronary bypass machine are inserted, ligature is tightened to stop or redirect blood flow in those arteries, and then coronary procedure can be performed e.g. CABG
What are the Openings and Valves of the Right Atrium?
- Thebesian Veins
- IVC with small valve
- SVC
- Coronary Sinus with small valve
- Right AV Valve/Tricuspid
What are the Thebesian Veins?
Veins draining the myocardium and emptying into ALL chambers of the heart
What are the Openings and Valves of the Left Atrium?
- Thebesian Veins
- Left AV Valve/Mitral Valve/Bicuspid
- 4 Pulmonary Veins
What are the Auricles?
Pouches on the external surface of the Right and Left Atrium full of Pectinate Muscles