SA node sends an impulse for the atria to contract. AV node is then activated which contracts the ventricles.
the atriventriculart node causes both atria to contract
The sinoatrial node triggers an impulse
SA node
The Heart's own pace makerThe heart beats regularly because it has it's own pacemaker. The pacemaker is a small region of muscle called the sinoatrial, or SA, node. It is in the upper back wall of the right atrium. The node triggers an impulse that causes both atrium to contract. Very quickly, the impulse reaches the atrioventricular, or AV, node at the bottom of the right atrium. Immediately, the atrioventricular node triggers an impulse that causes both ventricles to contract.
The heart beats regularly because it has it's own pacemaker. The pacemaker is a small region of muscle called the sinoatrial, or SA, node. It is in the upper back wall of the right atrium. The node triggers an impulse that causes both atrium to contract. Very quickly, the impulse reaches the atrioventricular, or AV, node at the bottom of the right atrium. Immediately, the atrioventricular node triggers an impulse that causes both ventricles to contract.
the purkinje fibers um no!!! wrong answer!!
contract and push blood into the ventricles of the heart. This electrical activity originates from the sinoatrial node and travels through the atrioventricular node, stimulating the atrial muscles to contract in a coordinated manner. This process ensures efficient blood flow through the heart.
At the AV node, the impulse is delayed for about 0.1s, allowing the atria to respond and complete their contraction before the ventricles contract.
blood can pass from the atria to the ventricles.
No, the sinoatrial (SA) node initiates contraction of the atria, which subsequently causes stimulation of the AV node, which then initiates contraction of the ventricles via the Purkinje fibers.
The impulse is temporarily delayed at the atrioventricular (AV) node. This delay allows the atria to contract and complete the filling of the ventricles before the impulse is transmitted to them. The delay also ensures proper coordination of the heart's contractions, promoting efficient blood flow.