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cardiac myocytes....
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What is the main pace maker of the heart?
The primary pacemaker of a normal healthy heart is the sinus node (or SA node). It is located in the right atria of the heart.
If the SA node fails to fire what takes over?
If the SA node fails to fire the atrioventricular node should take over.
What causes the SA node to fire?
The autonomic nervous system causes the SA node to fire
Impulses can travel directly from the SA node to the AV node via the?
car
Is the AV node or the SA node closest to the center of the heart?
The sino-atrial node (or SA node) is located in the right atrium, just below the entrance of the superior vena cava in the upper right portion of the right atrium.
Do neurotransmitters affect SA node?
SA node effects which neurotransmitter?
What is the main pace maker of the heart?
The primary pacemaker of a normal healthy heart is the sinus node (or SA node). It is located in the right atria of the heart.
What pacemaker of the heart initiates depolarization under normal conditions?
The primary pacemaker of the mammalian heart is the sino-atrial node. If the SA node fails, the atrioventricular node (AV node) takes over pacemaking.
Correct order of intrinsic cardiac conduction?
Its one of these, cant remember which one though: AV node, SA node AV bundle, Purkinje fibres. SA node, AV bundle, Purkinje fibres, AV node. SA node, AV node, AV bundle, Purkinje fibres. Purkinje fibres, SA node, AV node, AV bundle.
If the SA node fails to fire what takes over?
If the SA node fails to fire the atrioventricular node should take over.
Where in the heart would the SA node be found?
The anterior, upper part of the right atrium.The Sinoatrial Node or SA Node is located in the right Atrium of the Heart. The SA node is responsible of the normal sinus rhythm.
Is the peacemaker of the heart the atrioventricular node?
NO! it is the SA Node..
What node triggers the impulse in the heart?
SA node
What causes the SA node to fire?
The autonomic nervous system causes the SA node to fire
What is the sa node?
The SA node is the "pacemaker" of the heart. Cells in the SA node are called "pacemaker" cells and they direct the contraction rate of the entire heart by generating action potentials.
What is the SA node known as?
SA = System Annoyance
The SA node triggers an impulse that causes both atria to do what?
SA node sends an impulse for the atria to contract. AV node is then activated which contracts the ventricles.
