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ilan707 ilan707
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Posts: 494
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6 years ago
The first heart sound (lub) is produced by the closing of the __________ and __________ valves.
  a. aortic semilunar; pulmonary semilunar
  b. right atrioventricular; aortic semilunar
  c. left atrioventricular; pulmonary semilunar
  d. right atrioventricular; left atrioventricular
  e. mitral; left atrioventricular

Question 2

An electrocardiogram (ECG, EKG) is a measure of the heart's:
  a. electrical system.
  b. blood flow to the body.
  c. contraction rate.
  d. blood flow to heart muscle.
  e. pumping ability.
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Replies
wrote...
6 years ago
Answer to q. 1

D

Answer to q. 2

A
ilan707 Author
wrote...
6 years ago
Thank you for your assistance, again and again
wrote...
6 years ago
My pleasure
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