[Intro]
[Heartbeat]
Thump, thump
[Break]
Charge!
[Verse 1]
In the chambers, deep, rhythms reside,
A tale of life, where pulses coincide,
Electric sparks in the heart’s embrace,
Setting the pace for the human race.
[Chorus]
Heartbeat, steady and strong,
In harmony with life’s sweet song,
The beat… hear the call,
The rhythm of life, the beat of all.
[Verse 2]
With each throb, a story unfolds,
Sustains veins, let the beat roll,
A dance of life in every beat,
A journey through the body’s heat.
[Chorus]
Heartbeat, steady and strong,
In harmony with life’s sweet song,
The beat… hear the call,
The rhythm of life, the beat of all.
[Bridge]
In the rhythm of life, we find our way,
In the heartbeat’s dance, we seize the day,
With every thump, a chance to start,
In the song of the heart, we find our part.
[Outro]
In the rhythm of the heartbeat’s sway,
We find our rhyme, day by day,
In every throb, a tale to tell,
In the heartbeat’s song, we dwell.
[End]
[Silence]
A SCIENCE LESSON
The heart beats as a result of an intricate electrical system that regulates its rhythm. Specialized cells within the heart generate electrical impulses, initiating each heartbeat and coordinating the contraction of its chambers.
The process begins with the sinoatrial (SA) node, often called the heart’s natural pacemaker, located in the right atrium. The SA node generates electrical signals that travel through the atria, causing them to contract and pump blood into the ventricles.
The electrical impulses then pass through the atrioventricular (AV) node, which briefly delays the signal to allow the ventricles to fill with blood.
From the AV node, the electrical impulses travel along specialized fibers called bundle branches and Purkinje fibers, spreading rapidly across the ventricles and causing them to contract, forcing blood out of the heart and into the circulatory system.
This coordinated sequence of electrical impulses and muscle contractions results in the rhythmic beating of the heart, pumping oxygen-rich blood to the body’s tissues and organs and removing waste products.