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heart membranes
upper membranes of heart quiz
heart term | description |
---|---|
pericardium | double walled sac enclosing the heart |
fiberous pericardium | loose fitting superficial part of pericardium; tough dense protective layer; anchors to surrounding stuctures; prevents overfilling of the heart |
serous pericardium(2layers) | thin slippery layer of pericardium composed of 2layers parietal and visceral(epicardium) |
1st layer Parietal layer | lines internal surface of fiberous pericardium attaches to large arterties; turns inferiorly onto the external heart surface creating 2nd layer |
2nd layer Visceral (epicardium) | 2nd layer of serous pericardium forms the inferior membrane of the pericardial cavity |
these 2layers create the pericardial cavity | between the parietal layer and the visceral (epicardium) layer of the serous pericardium the pericardial cavity is created; it contains a film of serous fluid that allow the smooth friction free gliding of membranes agaist each other during heart activity |