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.
The AV
The transmission delay at the AV node in the heart allows both ventricles to relax and be refilled by the contracting atria. After the AV node delay, the ventricles contract and force blood into the aorta (systemic circulation).
1. SA Node ----> 2. AV Node---> 3. AV Bundle (bundle of HIS)----> 4. Purkinje Fibers
SA node, AV node, Bundle of His, Purkinje fibers
SA node, AV node, AV Bundle, Bundle branches, subedocardial branches (purkinje fibers)
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The sinoatrial node is known as the pacemaker of the heart.
SA node and AV node
The transmission delay at the AV node in the heart allows both ventricles to relax and be refilled by the contracting atria. After the AV node delay, the ventricles contract and force blood into the aorta (systemic circulation).
It is supposed to be the sinus node and the conducting tissue. It includes the AV node and bundle of HIS. The sinus node generate the impulse in the heart for contraction. The AV node and bundle of HIS transmits the impulse to the ventricles.
What causes a heart murmur
What causes a heart murmur
SA node, Internodal pathways, AV node, Bundle of His, Bundle branches, Purkinje fibers.
AV node
1. SA Node ----> 2. AV Node---> 3. AV Bundle (bundle of HIS)----> 4. Purkinje Fibers
The AV node sends out an electrical impulse that causes the heart to contract.
SA node, AV node, Bundle of His, Purkinje fibers
SA node, AV node, AV Bundle, Bundle branches, subedocardial branches (purkinje fibers)