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HEART-CONDUCTING SYSTEM

Anatomy-Thorax

HEART-CONDUCTING SYSTEM

1. Conducts impulses from SA node => AV node => bundle of His => right + left branches => subendocardial Purkinje fibers.

2. SA node - situated in the right atrium, just below the SVC + top of crista terminalis. Contains P (pacemaker) cells.

3. AV node - in the IA septum, above + left of opening of coronary sinus.

4. Because the fibrous framework of the heart separates the atria from ventricles, the bundle is the only means of conducting normal impulses from the atria to ventricles.


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REFERENCES

1. Mcminn. (2003). Last's Anatomy. Elsevier Australia. ISBN:0729537528. Read it at Google Books - Find it at Amazon
2. Netter, F. H. (2019). Atlas of human anatomy. Philadelphia, PA: Elsevier.
3. Image: no reference available.

Ⓒ A. Manickam 2018

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