Final LAB

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Author:
Kojack
ID:
213803
Filename:
Final LAB
Updated:
2013-04-15 22:03:43
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lab
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F LAB
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  1. Which lead is defined at zero degrees by placing a negative electrode on the right wrist and a positive electrode on the left wrist?
    Lead I
  2. Which is a unique characteristic of a certain type of myocardial cell?
    Self sustained rhythmic depolarization cycles (autorhythmicity)
  3. An ECG directly measures:
    electrical potential of the myocardium
  4. Which part of the conduction system is most likely the cause of the abnormality?
    Purkinje fibers
  5. What is the R wave axis?
    The axis of ventricular conduction
  6. For normal ventilation, the intrapleural (space between lung and thoracic wall) pressure must be __________ the intrapulmonary (within the lung) pressure.
    lower than
  7. Which substance(s) are not filtered through the glomerulus?
    Red blood cells
  8. Which substance(s) are often found in the urine of an untreated diabetic?
    all the above (a,b,c)
  9. Increased production of aldosterone results in?
    increased sodium reabsorption
  10. Increased production of ADH results in?
    decreased urine volume
  11. Where does the majority of the reabsorption take place in the nephron?
    Proximal convoluted tubule
  12. Which condition will increase the glomerular pressure and increase glomerular filtration rate?
    Dilation of the efferent arteriole
  13. Which factor ultimately limits the maximum possible urine concentration?
    The interstitial gradient
  14. Which hormone has the greatest effect on water reabsorption?
    ADH
  15. Propylthiouracil will decrease the production of which hormone?
    Thyroxine
  16. Which statement is true for blood type O ?
    Contains both anti-A and anti-B antibodies in the plasma
  17. Which blood type can receive donor cells with any antigen combination?
    AB+
  18. Which value is most affected by the exercise?
    Systolic blood pressure of Subject B
  19. Which subject shows better cardiovascular fitness?
    Subject A
  20. Which statement is false?
    Diastolic blood pressure represents the pressure within systemic veins
  21. Which condition would directly cause an abnormally high diastolic pressure?
    a decrease in the radius of systemic arteries
  22. Which cardiac event results in the systolic blood pressure?
    Ventricular contraction
  23. Which term describes the non-invasive method for measuring blood pressure that uses a stethoscope and a sphygmomanometer?
    Auscultatory
  24. What does the MCV measure?
    average volume of red blood cells in the blood sample
  25. Which values are needed to calculate the MCHC?
    hemoglobin concentration and hematocrit
  26. An increase in carbon dioxide levels and the inability to effectively remove it from the body can result in:
    a lower pH (acidosis)
  27. Select the correct order for the electrical conduction through the heart.
    SA node, AV node, Bundle of HIS, Purkinje fibers
  28. If there were damage to the AV node and subsequent slowing of impulse conduction, the ECG would show:
    an exaggerated PR interval
  29. Which ECG wave represents atrial depolarization?
    P
  30. Which ECG wave represents ventricular repolarization?
    T
  31. Which positive ECG wave represents ventricular depolarization?
    R

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