heart structure
the vessels that supply oxygenated blood directly to the heart muscle
what is the coronary blood supply
specialized channels that allow electrical signals to travel directly between cardiac cells
what are gap junctions
the amount of blood pumped out of the ventricle with each beat
what is stroke volume
reduced blood flow to heart muscle due to narrowed coronary arteries
what is myocardial ischemia
a stroke caused by a blockage in a blood vessel suppling the brain
what is an ischemic stroke
the layers surrounding and protecting the heart
what is the pericardium
strong junctions that hold cardiac cells together during contraction
what are desmosomes
the amount of blood in the ventricle just before contraction
heart muscle death caused by prolonged blockage of coronary blood flow
what is myocardial infarction
a temporary interruption in blood flow to the brain that resolves quickly
what is a transient ischemic attack TIA
the sequence blood flows through the heat and lungs
what is blood flow to the heart
calcium entering the cell triggers additional calcium release from the sarcoplasmic reticulum
what is a calcium induced calcium release
the pressure the heart must overcome to eject blood from the ventricle
what is afterload
a measurement used to estimate myocardial oxygen demand by multiplying heart rate and systolic blood pressure
what is a rate pressure produce
a stroke caused by a clot that formed directly within a brain artery
what is cerebral thrombosis
the specialized muscle tissue found only in the heart the contracts involuntarily
what is cardiac muscle
the repeating sequence of contraction and relaxation of the heart
what is the cardiac cycle
the stretching of cardiac muscle fibers before contraction due to ventricular filling
what is preload
the percentage of blood ejected from the left ventricle during contraction
what is left ventricular ejection fraction
a stroke caused by a blood vessel rupture in the brain
what is a hemorrhagic stroke
a visual representation showing chambers, valves, and vessels of the heart
what is a diagram of the heart
the dependance of cardiac contraction stregnth on calcium avalibility
what is the need for calcium in heart contraction
the strength of the heart contraction influenced by synoatheric stimulation
what is intropic state
women often experience these heart attack symptoms are frequenly then men
what are nausea fatigue shortness of breath and back/jaw pain
a clot that travels form another part of the body and black a cerebral artery
what is a cerebral embolism