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Author Question: The left main coronary artery divides into the _____ branches. a. marginal and circumflex b. ... (Read 77 times)

joesmith1212

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on: Jun 25, 2018
The left main coronary artery divides into the _____ branches.
 
  a. marginal and circumflex
  b. marginal and anterior descending
  c. anterior and posterior descending
  d. anterior descending and circumflex

Question 2

The intrinsic rate of the atrioventricular (AV) bundle is _____ beats/min.
 
  a. 20 to 40
  b. 40 to 60
  c. 60 to 80
  d. 80 to 100


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qytan

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Reply #1 on: Jun 25, 2018
Answer to Question 1

D
The left main coronary artery supplies oxygenated blood to its two primary branches: the left anterior descending (LAD) (also called the anterior interventricular) artery and the circumflex artery (CX).

Answer to Question 2

B
The AV bundle has pacemaker cells capable of firing at a rate of 40 to 60 beats/min.


joesmith1212

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Reply 2 on: Jun 25, 2018
Gracias!

isabelt_18

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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