In a study of heart valve functions, it is necessary to inject a dye intothe right atrium of the heart by inserting a catheter into a blood vesseland moving the catheter into the right atrium. What route would yousuggest? If you wanted to do this procedure into the left atrium, whatwould you do differently?
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In a study of heart valve functions, it is necessary to inject a dye into
the right atrium of the heart by inserting a catheter into a blood vessel
and moving the catheter into the right atrium. What route would you
suggest? If you wanted to do this procedure into the left atrium, what
would you do differently?
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- The Greek anatomist Erasistratus, originally from Ceos, identified the correct function of the right atrioventricular valve of the human heart, which was to prevent backward flow of blood from: the right ventricle to the right atrium the right ventricle to the left ventricle the right ventricle to the left atrium the left ventricle to the right ventricleThe Greek anatomist Erasistratus, originally from Ceos, identified the correct function of the right atrioventricular valve of the human heart, which was to prevent backward flow of blood from: the right ventricle to the right atrium the right ventricle to the left ventricle the right ventricle to the left atrium the left ventricle to the right ventricle the left ventricle to the left atriumWhich of the choices below best describes the systemic circulation of blood?a. The flow of blood into the right atrium and eventually out of the left ventricle.b. The movement of blood from the pulmonary trunk, through capillaries into the pulmonary veins.c. The movement of blood into the coronary arteries, through capillaries into the coronary sinus.d. The movement of blood from the aorta, through arteries and capillaries and then eventually to the vena cavae.
- Mitral valve prolapse is a disease where the valve between the left atrium and left ventricle doesn’t close completely. What effect would this have on the movement of blood through the heart?Why do you think it is important for heart valves to ensure that blood flows in only one direction in the heart?All arteries in the body contain oxygen-rich blood, with theexception of thea. aorta. c. renal arteries.b. pulmonary arteries. d. coronary arteries.
- How would the left ventricle of a patient who had had high blood pressure for many years differ from the left ventricle of a normal heart? A it would have a larger volume of muscle B it would have a smaller volume of muscle C it would be smaller than the right ventricle D chronic high blood pressure would weaken the heart valves but would have no anatomical effects on the walls of the ventriclesWhich component of the heart conduction systemwould have the slowest rate of firing?a. atrioventricular nodeb. atrioventricular bundlec. bundle branchesd. Purkinje fibersWhy is there a pause after the atrial contraction andbefore the ventricular contraction?
- Do pulmonary arteries carry oxygenated or deoxygenated blood to or from the heart? I don’t understand what the pulmonary arteries and veins do.In which of the heart chambers would deoxygenated blood be found? A)left atrium and left ventricle B)right atrium and left atrium C)right atrium and right ventricle D)left atrium and right ventricleIf the pressure in the ventricles is higher than the pressure in the atria, but lower than the pressure in the great arteries, which of the following is true? a-semilunar valves will be closed, but the atrioventricular valves will be open, ventricles will be filling b-both the atrioventricular and semilunar valves will be closed and there will be no flow of blood c-both the atrioventricular and semilunar valves will be open and there will be flow through the ventricles d-the atrioventricular valves will be closed, but the semilunar valves will be open, ventricles will be ejecting blood
