Trace the impulse pattern of conduction in sequence through the ...

[sc00by25]

Trace the impulse pattern of conduction in sequence through the heart. (Separate letters by a comma and space as follows: A, B, C, D)
 
  a. Atrial wall
  b. Atrial-ventricular (AV) node
  c. Purkinje fibers
  d. Sinoatrial (SA) node
  e. Bundle branches
  f. Bundle of His

Question 2

Arrange in sequence the path of the blood through the coronary circulation. (Separate letters by a comma and space as follows: A, B, C, D)
 
  a. Right atrium
  b. Pulmonary artery
  c. Tricuspid valve
  d. Right ventricle
  e. Superior and inferior vena cava
  f. Pulmonary vein
  g. Left atrium
  h. Mitral valve
  i. Left ventricle
  j. Lungs

[amit]

Answer to Question 1

B, A, D, F, E, C

The conduction begins with the impulse from the SA node that travels down the atrial wall to the AV node, to the Bundle of His, to the bundle branches, and finally to the Purkinje fibers.

Answer to Question 2

ANS:
E, A, C, D, B, J, F, G, H, I

The blood travels through the vena cava to the right atrium, through the tricuspid valve to the right ventricle, through the pulmonary artery to the lungs. The pulmonary veins deliver the blood to the left atrium, then through the mitral valve to the left ventricle and out the aorta to the body.