The primary pacemaker of the heart is the Sinoatrial (SA) node. Here are the steps that explain why:

1. The heart's rhythm is controlled by a group of cells in the right atrium called the Sinoatrial (SA) node.

2. The SA node generates an electrical signal that travels through the heart, causing it to contract and pump blood.

3. This signal is generated at a regular rate, which sets the pace for the heart rate.

4. Therefore, the SA node is often referred to as the heart's natural pacemaker.

5. If the SA node fails to function properly, an artificial pacemaker may be needed to regulate the heart's rhythm.

Question

The primary pacemaker of the heart is the Sinoatrial (SA) node. Here are the steps that explain why:

1. The heart's rhythm is controlled by a group of cells in the right atrium called the Sinoatrial (SA) node.

2. The SA node generates an electrical signal that travels through the heart, causing it to contract and pump blood.

3. This signal is generated at a regular rate, which sets the pace for the heart rate.

4. Therefore, the SA node is often referred to as the heart's natural pacemaker.

5. If the SA node fails to function properly, an artificial pacemaker may be needed to regulate the heart's rhythm.

Knowee AI · Accepted Answer

The primary pacemaker of the heart is the Sinoatrial (SA) node. Here are the steps that explain why:

1. The heart's rhythm is controlled by a group of cells in the right atrium called the Sinoatrial (SA) node.

2. The SA node generates an electrical signal that travels through the heart, causing it to contract and pump blood.

3. This signal is generated at a regular rate, which sets the pace for the heart rate.

4. Therefore, the SA node is often referred to as the heart's natural pacemaker.

5. If the SA node fails to function properly, an artificial pacemaker may be needed to regulate the heart's rhythm.

Which structure is the primary pacemaker of the heart?