OMSA Flashcards
2 chambers of heart contain
Right and left atria (receive) and right and left ventricles (pump)
Function of the 2 heart chambers
Right pumps to lungs left pumps everywhere else
Valve found between right atrium and right ventricle
Tricuspid
What do valves do
Prevent back flow of blood and separates chambers
What valve lies between the left atrium and left ventricle
Mitral
What valve allows blood to flow through right ventricle to pulmonary artery
Pulmonary valve
What valve allows blood to flow from the left ventricle into the aorta
Aortic valve
What noise is the first sound of the heart beat (lub) caused by
Mitral and tricuspid valves closing
What is the second sound of a heart beat (dub) caused by
Aortic and pulmonic valves closing
Angina pectoris
Decrease in blood supply to heart causing chest pain
Myocardial infarction
Necrosis of the heart caused by deprivation of oxygen for too long or heart attack
What does the info on the EKG represent
Electrical activity of contraction of the myocardium
What is another term for negative myocytes
Polarized
Cells while resting are
Negative
Beta one controls
Heart
Name the two systems that comprise the autonomic nervous system
Sympathetic and parasympathetic
Follow the blood flow of the heart: superior and inferior vena cava to the ____ atrium, past the ___ valve and into the ____ ventricle. Past the ____ valve to the ____ artery to the lungs for oxygen
Right, tricuspid, right, pulmonic, pulmonary
Trace the path of the conduction system through the heart: ___ node to the ___ node to the bundle of his to the ___ and finally to the ___
SA, AV, bundle branches,purkinjie fibers
The ___ valve lies between the right atrium and right ventricle, while the ___ valve lies between the left atrium and left ventricle
Tricuspid, mitral
From the lungs blood travels through the ___ vein to the ___ atrium past the __ valve to the __ ventricle then through the __ valve into the __ where it is pumped into the rest of the body
Pulmonic, left, mitral, left, aortic, aorta
Stimulation of the vagus nerve will ___ the heart rate
Decrease
Another name for the sympathetic nerve is the cholinergic system
False
Insufficient blood flow through the coronary arteries can result in
Angina
What is the difference between angina and myocardial infarction
Angina is chest pain due to inadequate oxygenation while myocardial infarction is death of the actual heart muscle