human patho unit 6
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10 Terms
where is the heart located
the mediastinum
in the pericardial sac
what is the partietal pericardium
the outer layer od the pericardial sac
made of tough fibrous tissue
what is the epicardium
inner layer of the pericardium
lies directly on the hearts surface
outermost layer of the heart wall
pericardial cavity is
the space between the pirietal pericardium and epicardium
filled with serous fluid to reduce friction during heartbeats
Myocardium is
the thick middle layer
muscular
responsible for pumping action
contains cardiac muscles cells
endocardium is the
the inner lining of the chamber and vavles
smooth surface helps prevent blood clots
what is the function of the cardiovascular system
transports oxygen and nutrients to tissues
removes carbon dioxides and wastes
when the heart makes a lub sound what does this indicate
contraction
closing of the tri and bicuspid vavles
causes the systolic sound
when there is a dub sound of the heart what does this indicate
relaxation
pulmonary and semilunar valves are closing
diastolic sound
