Heart Flashcards
Pericardium
fibroserous sac that surrounds heart
Fibrous Pericardium
outside sac
attaches to sternum via pericardiacophrenic ligament
attaches to sternum via sternopericardial ligament
Serous Pericardium
inside sac
Parietal layer
Visceral Layer: outer layer of heart known as epicardium
Pericardial Cavity
potential space between parietal and visceral layers, allows heart to move freely
Wall of Heart
Epicardium- visceral serous pericardium
Myocardium- cardiac muscle
Endocardium- smooth endothelial layer that lines heart and valves
Fibrous Skeleton
4 fibrous rings, surround orifices of valves
attachment for myocardium of atria & ventricles
provides attachment for cardiac valves
provides electrical insulation between atria and ventricles
Apex of Heart
Tip of left vetricle, in 5th intercostal space, between 5th and 6th ribs
Base of Heart
formed by left atrium, posterior side of heart
Right Border
right atrium, extending between SVC & IVC
Left Border
primarily left ventricle, some of left atrium
Inferior Border
primarily right ventricle and some left ventricle
Superior Border
jxn where great vessels enter and leave heart
Sternocostal (anterior) surface
mostly right ventircle
Diaphragmatic (inferior) surface
mostly left ventricle and partially right ventircle
Right Atrium
SVC/IVC
opening coronary sinus
fossa ovalis
tricuspid valve