Difference between SA node and AV node

Difference between SA node and AV node

Difference between SA node and AV node are in tabular form below –

No.

SA node

AV node

Definition

1. A node which is present in the walls of the right atrium and sends impulses to contract, known for pacemaker of the heart, this is known as SA node. A node which is present on the right side of lower part of atrial septum and it convey impulses form intermodal tracts to ventricles, this is known as AV node.

Also known for

2. This is also called as pacemaker of the heart. This is also called as pacesetter of the heart.

Shape

3. This is flattened, ellipsoidal and longer type of node. This is a half oval and short type of node.

Regulation

4. The autonomic nervous system regulates this SA node. The SA node regulates AV node.

Closely located to the

5. This node is closely located to the opening of superior vena cava. This node is closely located to the opening of coronary sinus.

Transmission

6. Here, cardiac impulses are transmitted to the left and right atrium. Here, cardiac impulses are transmitted to the left and right the ventricles.
Updated: March 3, 2022 — 11:19 am

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