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wall of heart
a and p II, chap 15 #2
Question | Answer |
---|---|
location of heart (8) facts to remember | posterior to sternum; medial to lungs; anterior to veterbal column base; lies beneath 2nd ribapex at 5th intercostallies upon diaphragmbase: medialapex: lateral |
the wall of the heart of composed of these 3 layers | epicardium; myocardium; endocardium |
the epicardium is also called the _________ | visceral periocardium: which is the outter layer of the heart and the inner layer of the pericardium |
the visceral pericardium or epicardium depending on nomenclature function is to | form a protective outer covering; secretes serous fluid to protect from friction with outside organs and tissue |
the myocardium: | is cardiac muscle tissue seperated by connective tissue and blood and lymph capillaries and nerve fibers |
the function of the mycardium is to | contracts to pump blood from the heart chambers |
the endocardium is a membrane made of | epithelium and underlying connective tissue, including blood vessels and specialized muscle fibers |
the function of the endocardium is | to form a protective inner lining of the chambers and valves |
the periocardial cavity is what the pericardium sits in, it is also a common site for | infections |
the pericardium (or pericardio sac) | surrounds the heart and is made of connective tissue |
the pericardium is made to 2 layers and each layer is respectily made of a different tissue each, which are | parietal pericardium; fibrous pericardium-- |
fibrous pericardium is... | is a tough, protective sac of dense connective tissue: most superficial layer |
parietal pericardium... | surrounds the epicardium, and connects at the base of the heart the visceral (epicardium) pericardium. |
pericardial cavity is... | In between the parietal and visceral pericardial layers there is a potential space called the pericardial cavity. It is lubricated by a film of serous fluid. |
visceral pericaridium is... | epicardium |
serous pericardium | The serous pericardium consists of two layers: a parietal pericardium and a visceral pericardium |