A) semilunar valves:pulmonic,aortic
B) atrioventricular valves:tricuspid,bicuspid,mitral
C) structures that carry oxygenated blood:pulmonary veins,left ventricle,aorta
D) structures that carry unoxygenated blood:right ventricle,venae cavae,pulmonary veins
F) B) and C)
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A) "lubb-dupp"
B) actin and myosin interaction
C) murmur
D) depolarization
F) A) and B)
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A) myocardial contraction
B) ventricular depolarization
C) closing of heart valves
D) diffusion of O2 from the lungs to the blood in the pulmonary capillaries
F) All of the above
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A) coronary arteries
B) pulmonary artery
C) pulmonary veins
D) cardiac veins
F) A) and B)
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A) atrial contraction.
B) ventricular relaxation.
C) atrial depolarization.
D) atrial repolarization.
F) A) and C)
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A) closing of the heart valves
B) flow of blood through the coronary arteries
C) the electrical signal as it moves through the AV node
D) the firing of the autonomic nerves to the SA node
F) A) and D)
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A) pumping blood into the great vessels
B) closing their AV valves
C) relaxing
D) opening their semilunar valves
F) All of the above
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A) vena cava
B) pulmonary veins
C) right atrium
D) pulmonic valve
F) C) and D)
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A) right atrium.
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B) left veins.
C) pulmonary artery.
D) aorta.
F) All of the above
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A) regulates the direction of the flow of blood through the heart
B) regulates the amount of oxygen bound to hemoglobin
C) regulates heart rate
D) directs the movement of the cardiac impulse
F) C) and D)
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