Ch 19 Heart test B

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eddardofwinter
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271723
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Ch 19 Heart test B
Updated:
2014-04-24 01:03:25
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  1. Atrial systole begins
    A. immediately after the T wave.
    B. during the Q wave.
    C. during the S-T segment.
    D. immediately after the P wave.
    E. immediately before the P wave.
    D. immediately after the P wave.
    (this multiple choice question has been scrambled)
  2. Atrial depolarization causes
    A. the P wave.
    B. the first heart sound.
    C. the QRS complex.
    D. the quiescent period.
    E. the T wave.
    A. the P wave.
    (this multiple choice question has been scrambled)
  3. The long plateau in the action potential observed in cardiocytes is probably related with _____________ staying longer in their cytosol.
    A. Na+
    B. Cl-
    C. K+
    D. Na+, K+, and Ca2+
    E. Ca2+
    E. Ca2+
    (this multiple choice question has been scrambled)
  4. When the left ventricle contracts, the _____ valve closes and the _____ valve is pushed open.
    A. tricuspid; aortic
    B. bicuspid; pulmonary
    C. aortic; pulmonary
    D. mitral; aortic
    E. tricuspid; pulmonary
    D. mitral; aortic
    (this multiple choice question has been scrambled)
  5. Mitral valve stenosis causes blood to leak back into the ___________ when the ventricles contract.
    A. pulmonary arteries
    B. aorta
    C. pulmonary trunk
    D. left atrium
    E. right atrium
    D. left atrium
    (this multiple choice question has been scrambled)
  6. Isovolumetric contraction occurs during the _________ of the electrocardiogram.
    A. P wave
    B. P-Q segment
    C. R wave
    D. S-T segment
    E. T wave
    C. R wave
    (this multiple choice question has been scrambled)
  7. During isovolumetric contraction, the pressure in the ventricles
    A. rises rapidly.
    B. falls rapidly.
    C. falls and then rises.
    D. remains constant.
    E. rises and then falls.
    A. rises rapidly.
    (this multiple choice question has been scrambled)
  8. Mitral valve prolapse (MVP) generates a murmur associated with the _____ heart sound that occurs when the ____.
    A. lubb (S1); atria contract
    B. lubb (S1); ventricles relax
    C. dupp (S2); ventricles relax
    D. dupp (S2); atria relax
    E. lubb (S1); ventricles contract
    E. lubb (S1); ventricles contract
    (this multiple choice question has been scrambled)
  9. This is the correct sequence of events of the cardiac cycle.
    A. ventricular filling → isovolumetric relaxation → ventricular ejection → isovolumetric contraction
    B. ventricular filling → isovolumetric contraction → ventricular ejection → isovolumetric relaxation
    C. ventricular filling → isovolumetric contraction → isovolumetric relaxation → ventricular ejection
    D. ventricular filling → isovolumetric relaxation → isovolumetric contraction → ventricular ejection
    E. ventricular filling → ventricular ejection → isovolumetric contraction → isovolumetric relaxation
    B. ventricular filling → isovolumetric contraction → ventricular ejection → isovolumetric relaxation
    (this multiple choice question has been scrambled)
  10. Most of the ventricle filling occurs
    A. during atrial systole.
    B. during isovolumetric contraction.
    C. when the AV valve is closed.
    D. during atrial diastole.
    E. during ventricular systole.
    D. during atrial diastole.
    (this multiple choice question has been scrambled)
  11. Congestive heart failure (CHF) of the right ventricle
    A. increases the ejection fraction of the right ventricle.
    B. reduces the ejection fraction of the left ventricle.
    C. can cause pulmonary edema.
    D. can cause systemic edema.
    E. increases cardiac output in both ventricles.
    D. can cause systemic edema.
    (this multiple choice question has been scrambled)
  12. Assume that the left ventricle of a child's heart has an EDV=90mL, and ESV=60mL, and a cardiac output of 2,400 mL/min. His SV and HR are
    A. SV=150 mL/beat, HR=16 bpm.
    B. SV=30 mL/beat, HR=80 bpm.
    C. SV=40 mL/beat, HR=60 bpm.
    D. SV=80 mL/beat, HR=30 bpm.
    E. SV=16 mL/beat, HR=150 bpm.
    B. SV=30 mL/beat, HR=80 bpm.
    (this multiple choice question has been scrambled)
  13. _____________ increase(s) stroke volume.
    A. Increased venous return
    B. Increased afterload
    C. High arterial blood pressure
    D. Negative inotropic agents
    E . Dehydration
    A. Increased venous return
    (this multiple choice question has been scrambled)
  14. The volume of blood ejected by each ventricle in one minute is called
    A. the afterload.
    B. the stroke volume.
    C. the cardiac output.
    D. the cardiac reserve.
    E. the preload.
    C. the cardiac output.
    (this multiple choice question has been scrambled)
  15. Cardioinhibitory centers in the _____________ receive input from __________.
    A. cortex; proprioceptors in the muscles
    B. pons; baroreceptors in the internal carotid
    C. medulla oblongata; chemoreceptors in the aortic arch
    D. hypothalamus; proprioceptors in the joints
    E. thalamus; chemoreceptors in the medulla oblongata
    C. medulla oblongata; chemoreceptors in the aortic arch
    (this multiple choice question has been scrambled)
  16. The Frank-Starling law of the heart states that stroke volume is proportional to
    A. the afterload.
    B. the heart rate.
    C. the end-systolic volume.
    D. the end-diastolic volume.
    E. contractility.
    D. the end-diastolic volume.
    (this multiple choice question has been scrambled)

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