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12. A heart murmur is normally caused by what event?

12. A heart murmur is normally caused by what event?

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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8. What effect do calcium slow channels have on shortening or lengthening the contraction time of the heart muscie? 9. Beta-adrenergic blockers bind to norepinephrine sites, preventing these neurotransmitters from having an effect. What effect would the use of "beta blockers" have on heart rate? 10. How much of a change in the heart rate of the frog did you see after the addition of calcium chloride? What was the change in the contraction strength? What process might account for this in terms of cardiac muscle interactions with calcium? 11. What heart sound is produced by the closure of the atrioventricular valves in the heart? 12. A heart murmur is normally caused by what event?
Transcribed Image Text:8. What effect do calcium slow channels have on shortening or lengthening the contraction time of the heart muscie? 9. Beta-adrenergic blockers bind to norepinephrine sites, preventing these neurotransmitters from having an effect. What effect would the use of "beta blockers" have on heart rate? 10. How much of a change in the heart rate of the frog did you see after the addition of calcium chloride? What was the change in the contraction strength? What process might account for this in terms of cardiac muscle interactions with calcium? 11. What heart sound is produced by the closure of the atrioventricular valves in the heart? 12. A heart murmur is normally caused by what event?
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