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Sinoatrial

sinoatrial

(Science: anatomy) Relating to the sinus venosus and the right atrium of the heart.

Synonym: sinuatrial.


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Please Help - The Heart

... Systole Cardiac Output Atrioventricular Node Cardiac Sounds Autonomic Nervous System Diastole Bundles & Conductive Fibers EKG Cardiac Cycle Sinoatrial Node Ventricular Systole 1. Sinoatrial Node the heart’s “pacemaker”, a mass of conductive tissue which produces the signal that initiates ...

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by PleaseHelp
Sun Feb 21, 2010 10:03 pm
 
Forum: General Discussion
Topic: Please Help - The Heart
Replies: 5
Views: 6679

Sinoatrial Node ,

... with nerves especially the cranial and medulla oblongata it extend all the way from the cranial to the anus nerve. You once said that the (SA )or sinoatrial node can keep the heart beating alone how. I still have not found actually what nerve but I think it is the Vagus nerve who is the boss Man ...

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by CXCR4
Thu Feb 12, 2009 6:57 pm
 
Forum: General Discussion
Topic: controling Nerve of the Brain? Which One
Replies: 8
Views: 15726

Re: controling Nerve of the Brain? Which One

It is important to note the sinoatrial (SA) node when mentioning heart rhythms as well. This provides sympathetic innervation of the myocardial muscle, the electrical signals are propogated the same way a defibulator works: a signal originates ...

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by daveinhampton
Tue Feb 10, 2009 5:03 pm
 
Forum: General Discussion
Topic: controling Nerve of the Brain? Which One
Replies: 8
Views: 15726

Electric shocks, anybody??

... to another. If the pacemaker cells get damaged(could happen if depolarisation is induced in the refractary period) the impulse won't get from the sinoatrial node to the rest of the heart. The heart simply stops. Just a hypothesis...

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by MrMistery
Fri Feb 02, 2007 6:14 pm
 
Forum: Human Biology
Topic: Electric shocks, anybody??
Replies: 10
Views: 4821

BIOLOGICAL PACEMAKER-SA NODE

PLEASE STATE YOUR QUESTIONS CLEARLY. AND THIS IS NOT A PLACE TO IRONY SOME ONE. The sinoatrial node (abbreviated SA node or SAN, also called the sinus node) is the impulse generating (pacemaker) tissue located in the right atrium of the heart. It is a group of cells ...

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by dipjyoti
Wed Sep 27, 2006 7:03 am
 
Forum: Human Biology
Topic: BIOLOGICAL PACEMAKER-SA NODE
Replies: 10
Views: 5644
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