Cardiology MCQ
1. Alternative routes of blood supply are called __________.
Answer
Correct Answer:
Anastomoses
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2. A block at the av node is likely to appear as a(n) ___________________ on an ecg.
Answer
Correct Answer:
Prolonged PR intervals
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3. Electrical stimulation of the ________ is reinforcing to rats.
Answer
Correct Answer:
Ventral tegmental area
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4. Electrical stimulation of a rat's lateral hypothalamus would most likely result in ____.
Answer
Correct Answer:
An increase in food seeking behaviors
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5. Electrical stimulation as a method of mapping the cerebral cortex was introduced by ____.
Answer
Correct Answer:
Fritsch and Hitzig.
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6. Electrical signals pass between cardiomyocytes through the _____.
Answer
Correct Answer:
Gap junctions
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7. Excessive vagal stimulation of the heart will result in _______.
Answer
Correct Answer:
A decrease in heart rate and, eventually, a temporary cessation of the heartbeat
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8. After entering the right atrium, the furthest a red blood cell can travel is the _________.
Answer
Correct Answer:
Superior vena cava
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9. The one-way nature of the left av valve prevents blood flow from _________.
Answer
Correct Answer:
The left ventricle to the left atrium
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10. Aortic valve stenosis is characterized by _______.
Answer
Correct Answer:
Increased resistance to blood flow, thickening of the myocardium and narrowing of the aortic semilunar valve
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11. H f _____.
Answer
Correct Answer:
Heart failure
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12. The closing of the left av valve occurs near the beginning of __________.
Answer
Correct Answer:
Ventricular systole
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13. Hypertension increases ________ causing stroke volume to ________.
Answer
Correct Answer:
Afterload; decrease
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14. Atrial systole begins __________.
Answer
Correct Answer:
Immediately after the P wave
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15. Electrodes for limb leads should be attached to ____.
Answer
Correct Answer:
Fleshy portions of the limbs
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16. Beginning around age 25, the maximum heart rate _____ and the resting heart rate _____.
Answer
Correct Answer:
Decreases; remains same
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17. cardioinhibitory centers in the __________ receive input from __________.
Answer
Correct Answer:
Medulla oblongata; chemoreceptors in the aortic arch
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Health And Medicine MCQs | Topic-wise
