Question
How does the heart beat?
Responses
the muscles squeeze when the ventricles get full
the muscles squeeze when the ventricles get full
through an electrical system
through an electrical system
gravity
gravity
exercise
Responses
the muscles squeeze when the ventricles get full
the muscles squeeze when the ventricles get full
through an electrical system
through an electrical system
gravity
gravity
exercise
Answers
GPT-4o mini
The heart beats primarily through an electrical system. The heartbeat is initiated by electrical impulses that originate in the sinoatrial (SA) node, which is often referred to as the heart's natural pacemaker. These impulses cause the heart muscles to contract and pump blood. As the ventricles fill with blood, they contract and push blood out to the lungs and the rest of the body.
While factors like exercise and gravity can influence heart rate and blood flow, the fundamental mechanism of the heartbeat is driven by this electrical conduction system.
While factors like exercise and gravity can influence heart rate and blood flow, the fundamental mechanism of the heartbeat is driven by this electrical conduction system.