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The vagus nerve slows heart action by transmitting the chemical ____, whereas the sympathetic nervous system stimulates the release of ___ that accelerates the heart rate.
acetylcholine/epinephrine
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Between each atrium and it's associated valve are the ____.
Atrioventricular valves
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The valve between the left atrium and left ventricle:
Mitral (bicuspid) valve
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The valve between the right atrium and right ventricle:
Tricuspid Valve
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The valve between the right ventricle and pulmonary artery:
Pulmonary Valve
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The valve that separates the aorta and left ventricle:
Aortic Valve
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Which needs greater pressure, the systemic or pulmonary circulation?
Systemic
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Which wall is thicker, that of the left or right ventricle?
Left
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Most common congenital cardiac lesions:
left-to-right shunts
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Most common left-to-right shunt:
atrial septal defect
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Second major type of left-to-right shunt:
ventricular septal defect
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Third major type of left-to-right shunt:
patent ductus arteriosus
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The ductus arteriosus serves to shunt blood from the ___ artery into the ___ during intrauterine life.
pulmonary; systemic circulation
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In left-to-right shunts, the flow of blood from the higher pressure aorta to the lower pressure pulmonary artery causes:
increased pulmonary flow, and excess volume of blood returned to elft atrium and ventricle
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All left-to-right shunts can be complicated by the development of pulmonary hypertension, or ___.
Eisenmenger's syndrome
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Most common cause of cyanotic congenital heart disease:
Tatralogy of Fallot
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Four abnormalities of Tetralogy of Fallot:
high ventricular septal defect, pulmonary stenosis, overriding of aortic orifice, right ventricular hypertrophy
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What causes the right ventricular hypertrophy in Tetralogy of Fallot?
Pulmonary stenosis causes elevation of pressure
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Narrowing of the aorta that most commonly occurs just beyond the branching of the blood vessels to the head and arms:
Coarctation of the Aorta
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Coarctation causes what type of blood pressure?
Normal in arms, low in legs
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Factors predisposing to the development of coronary artery disease include:
hypertension, obesity, smoking, high-colesterol diet, and lack of exercise
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Inability of the heart to propel blood at a rate and volume sufficient to provide an adequate supply to tissues:
Congestive Heart Failure
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Causes of CHF include:
intrinsic cardiac abnormality, hypertension, or any obstruction to normal blood flow
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Abnormal accumulation of fluid in the extravascular pulmonary tissues:
Pulmonary Edema
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Most common cause of pulmonary edema:
elevation of pulmonary venous pressure
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Most common cuase of elevation of pulmonary venous pressure:
left sided heart failure
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Leading cause of strokes and CHF:
Hypertension
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High blood pressure is that above:
140/90
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What causes narrowing of systemic blood vessels and an increased resistance to blood flow?
Long-standing high blood pressure (hypertensive heart disease)
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Localized dilation of an artery that most commonly involves the aorta, especially it's abdominal portion:
Aneurysm
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A ___ aneurysm involves only one side of the arterial wall while a ____ aneurysm involves th bluging of the entire circumference of the vessel wall:
saccular; fusiform
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An aneurysm represents a:
weakness in the wall of a blood vessel
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Presence of multiple small aneurysms is suggestive of generalized:
arterial inflammation (arteritis)
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Most aortic dissections occur in patients with:
arterial hypertension
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Arteries marked by thickening, hardening, and loss of elasticity in the arterial wall:
atherosclerosis
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Major cause of vascular disease of the extremities:
atherosclerosis
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Autoimmune disease that results from a reaction of the patient's antibodies against antigens from a previous strep infection:
Rheumatic fever
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The major damage of rheumatic fever is to the:
valves of the heart; most frequently mitral and aortic
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Development of nodules or vegetations forming on heart valves caused by deposists of bacteria or fungi:
Infective Endocarditis
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Accumulation of fluid within the pericardial space surrounding the heart:
pericardial effusion
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Pericardial effusion may result from:
bacteria, viruses, or neoplastic involvement
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Major source of potentially fatal pulmonary embolism; primarily involves the lower extremeties:
Deep Venous Thrombosis (DVT)
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Precipitating factors of DVT:
trauma, bacterial infection, prolonged bed rest, and oral contraceptives
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DVT may be the earliest symptom of an unsuspected malignancy of the:
pancreas, lung, or GI system
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Heart rate is controlled by the ____ nervous system:
autonomic
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Oxygenated blood reaches the heart muscle by way of the:
right and left coronary artery
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Arterial disease caused by fatty deposits on the inner arterial wall is termed:
arteriosclerosis
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What radiographic procedure is used to determine the presence of coronary artery disease?
Coronary arteriogram
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The procedure in which a balloon is used to dilate narrowed coronary arteries is named:
percutaneous transluminal angioplasty
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What is the modality of choice for demonstration of and abdominal aortic aneurysm?
Ultrasonography
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The ___ of the heart are the major site of damage from rheumatic fever.
valves
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Most sensitive and specific noninvasive method of diagnosing mitral stenosis:
Echocardiography
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Invasive procedure for determining deep vein thrombosis:
venography
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Most acurate screening procedure for assessing renovascular lesions:
arteriography
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