Cardiac Conduction System Model

sinoatrial (SA) node

Structure "A" in the image below is called:

atrial contraction

The depolarization (firing) of the SA node corresponds to…

atrioventricular (AV) node

Structure "B" in the image below is called:

ventricular contraction

The depolarization (firing) of the AV node corresponds to…

bundle of His (atrioventricular bundle)

Structure "C" in the image below is called:

Purkinje fibers

Structure "D" in the image below is called:

atrioventricular (AV) node

Structure "A" in the image below is called:

bundle of His (atrioventricular bundle)

Structure "B” in the image below is called:

Purkinje fibers

Structure "C” in the image below is called:

right and left bundle branches

Structure "D” in the image below is called:

junctional fibers

Structure "E” in the image below is called:

sinoatrial (SA) node

Structure "F” in the image below is called:

atrioventricular valves

First heart sound S1 (lubb) is created by blood turbulence associated with the closing of the _________.

semilunar valves

The second heart sound S2 (dupp) represents the closing of the _________, close to the end of ventricular systole.

aortic area

Which stethoscope placement is located at the second intercostal space to the right of the sternum?

pulmonary area

Which stethoscope placement is located at the second intercostal space to the left of the sternum?

tricuspid area

Which stethoscope placement is located at the fourth intercostal space to the left of the sternum?

mitral area

Which stethoscope placement is located at the fifth intercostal space in the midclavicular line?

bell

Label A is what part of the stethoscope?

stem

Label B is what part of the stethoscope?

ear tube

Label C is what part of the stethoscope?

ear piece

Label D is what part of the stethoscope?

chest piece

Label E is what part of the stethoscope?

diaphragm

Label F is what part of the stethoscope?