Cardio Flashcards
This sound is caused by closure of the atrioventricular valves the tricuspid and the mitral
S1 lub
Heart is supplied o2 and nourishment by a network of vessels known as
Coronary arteries
Sound is caused by closure of the semilunar valve the aortic and pulmonic
S2 dub
Drugs that affect contractibility are called
Inotropic drugs
The resistance against which the heart must pump to eject blood into the circulation
After load
Buildup of fatty plaque within the arteries
Arthersclerosis
Two upper hollow chambers of the heart
Atria
Conduction pathways that slightly delay transmission of the impulse from the atria to the ventricles of the heart
Atrioventricular node AV node
Between the atria and ventricles of the heart, the tricuspid valve on the right and the bicuspid or the mitral valve on the left
Atrioventricular valves AV VALVES
An electrical impulse and contraction independent of the nervous system and generated by the cardiac muscle
Automaticity
THe right and left bundle branches of the ventricular conduction pathways
Bundle of his
THe inherent ability for cardiac muscle to contract of shorten
Contractility
Enzyme that is released into the blood during a myocardial infarction
Creatinine kinase CK
Test for inflammatory response
C-reactive protein CRP
Heart wall lining inside of heart
Endocardium
Amino acid that has been shown increased in people with arthersclerosis
Homocysteine
Lack of blood supply due to obstructed circulation
Ischemia
Cluster of cardiovascular risk factors that increase incidence of CVD
Metabolic syndrome
Tissue becomes necrotic and dies
Myocardial infarction or heart attack
Cardiac muscle cells that form the bulk of the heart and contract w each beat
Myocardium
Hearts outermost layer
Epicardium
Double layer of fibroserous membrane
Pericardium
Degree to which muscle fibers in the ventricle are stretched at the end of the relaxation period
Preload
These fibers terminate in the ventricular muscle stimulating contraction
Purjunkie fibers