[Verse 1]
Right ventricle fires it, out through the front door,
Pulmonary artery leaning left, low to the floor,
One trunk, main pulmonary — the common stem,
Its presence or absence writes the truncus problem.
Splits like a wishbone, RPA slides back,
Tucks behind the aorta on its right-lung track,
LPA keeps rolling, straight shot to the left,
Two branches, one root — that's the vessel's whole self.
[Verse 2]
Left ventricle's engine, posterior, tucked right,
Aorta rises behind while the PA holds the front light,
Ascending aorta, sinuses of Valsalva bloom,
Left and right coronaries branch out of that room.
Arch swings over — normally hooks the left bronchus,
Innominate first, then carotid, then subclavian — watch us,
Flip the arch right-sided, mirror the same three,
Brachiocephalic, carotid, subclavian — see?
[Chorus]
Спираль, spiral, twisting like a vine,
Aorta behind, pulmonary in front — that's the design,
Coração puxa sangue, heart pulls the blood through,
PA e aorta dançam — dancing two by two,
Спираль вокруг сердца — spiral round the core,
Two great vessels crossing, that's the truncus lore.
[Verse 3]
Watch the choreography, this ain't random chance,
Aorticopulmonary septum spins its spiral dance,
PA starts up front, ends posterior-high,
Aorta starts behind then arches through the sky.
When that septum never forms, no spiral gets to grow,
But branch arteries on the trunk still echo what they know,
Type two truncus keeps that ghost-twist in the chest,
The spiral course remembers even when the wall's undressed.
[Chorus]
Спираль, spiral, twisting like a vine,
Aorta behind, pulmonary in front — that's the design,
Coração puxa sangue, heart pulls the blood through,
PA e aorta dançam — dancing two by two,
Спираль вокруг сердца — spiral round the core,
Two great vessels crossing, that's the truncus lore.
[Verse 4]
Superior, inferior vena cava feed the right,
Coronary sinus joins them — the heart's own drainage site,
Four pulmonary veins pour into the left,
Oxygen cargo home from the lung's own theft.
Ductus arteriosus, fetal bridge PA to aorta,
Closes after birth like a door that no longer supports ya,
Persistent or absent — matters in the CHD chart,
Often missing in truncus — memorize that part.
[Bridge]
Труба direita, труба левая — right pipe, left pipe spun,
Every vessel's got a partner, every artery's got a son,
Sinuses de Valsalva, coronárias saem lá,
Spiral, спираль — the fingerprint of how the heart was made.
[Chorus]
Спираль, spiral, twisting like a vine,
Aorta behind, pulmonary in front — that's the design,
Coração puxa sangue, heart pulls the blood through,
PA e aorta dançam — dancing two by two,
Спираль вокруг сердца — spiral round the core,
Two great vessels crossing, that's the truncus lore.
[Outro]
PA anterior, aorta atrás — remember the turn,
Спираль на всю жизнь — that's the lesson you'll learn,
Great vessels, branches, veins closing the loop,
Coração, сердце — one continuous troupe.