What is Sinus Node?

At times we get confused over various things due to some common name or similarity. For instance if I ask you ''what is sinus node?'' you may guess it something related to sinusitis, the infection caused in the sinuses of nasal and eye (air filled cavities in your skull) region. But, its not!

So, what is sinus node? Sinus node is a group of some consequential cells that reside in the atrium of your heart. Surprised! Yes, and this atrium is the exact location in your heart where electrical impulses take place or begins. These cells perform different functions. Sinusitis node cells in the right side of the atrium work as pacemaker and at the same time these cells produce proper rhythm in the electrical impulse that causes your heart to pump blood at regular intervals.

So next time if you hear anyone asking - what is sinus node? Explain him properly that its the natural pacemaker of your heart which has been naturally designed to generate electrical signals and conduct them throughout the muscular regions of your heart and stimulate it to contract and relax for pumping blood into arteries and Venecava.

The term sinus node was first coined in 967. Doctors then explained it as the quick atrial rhythm that happens in different period of bradycardia. But as researches go into depth more has been said and written on this tern what is sinus node? Now this term is used in broader sense that include sinusitis arrest, sinusitis exit block, sinusitis bradycardia, bradycardia tachycardia and atrial fibrillation.

Sinusitis nodal dysfunction is also related to what is sinus node? For instance when we have problem in our sinuses, the proper term for it is sinusitis. But we say, 'I have sinus' which indicates that you are suffering from the ailment. So when doctors find nodal dysfunction they say, ''the patient has sinusitis node'' which means the cells are not functioning well to maintain the rhythm of heart.

These are very complicated terms and this disease is very rare. Its found in a ratio of 3/5000. So if you suddenly ask someone what is sinus node he may not know about it. Only people from medical profession can answer you this question, the rest of who might have never heard about it will think its related to sinusitis or something to your nose.

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