[Verse 1]
Fossa ovalis, a dimple, a scar,
where the foramen ovale left its mark on the wall
Interatrial septum, splittin' RA from LA,
open before birth — that's the fetal blueprint, okay
Blood skips the lungs, takes the shortcut through the door,
seals itself shut once you're breathing, that's the law
But leave a little gap and you call it a PFO,
bigger hole stays open — ASD, now you know
[Chorus]
Septa, стена, la pared que separa,
walls in the heart, manteniendo el compás
Fossa ovalis, дырка that was meant to close,
listen close, mi amor, that's the way the story goes
Septum muscular, septum membranoso too,
every wall's got a job — la sangre sabe qué hacer
[Verse 2]
Now drop down south to the ventricles, my friend,
interventricular septum, thick wall without end
Muscular part is the meat, the brawny底 — I mean base,
built like a boxer's jaw, holdin' up the space
But up top by the valves it goes thin and refined,
membranous, outlet, infundibular — same design
Remember this patch, this fibrous little strip,
truncus arteriosus starts right here — don't let it slip
[Chorus]
Septa, стена, la pared que separa,
walls in the heart, manteniendo el compás
Fossa ovalis, дырка that was meant to close,
listen close, mi amor, that's the way the story goes
Septum muscular, septum membranoso too,
every wall's got a job — la sangre sabe qué hacer
[Verse 3]
Small piece left, where the crossroads convene,
atrioventricular septum, quiet and lean
Atrial wall shakes hands with the ventricular side,
right where the AV node and bundle reside
Surgeon's needle passes close, gotta thread it right,
one wrong stitch and you've blocked the electric light —
heart block waitin' in the shadow of that seam,
respect the geography, protect the conduction stream
[Verse 4]
Ostium primum, ostium secundum, learn the two,
septum primum drops down first, secundum follows through
Overlap and fuse, the foramen seals up tight,
fail that fusion young, the shunt stays open, day and night
Endocardial cushions rise to close the middle gate,
miss that fusion point and you've built an AV defect's fate
[Bridge]
Три перегородки, tres paredes en total,
each one a border, each one a protocol
IAS, IVS, and the AV in between,
learn the map of the wall and you'll read the machine
No es solo anatomía, it's the wiring underneath,
guard the membranous patch — Lesson Three's waitin' beneath
[Chorus]
Septa, стена, la pared que separa,
walls in the heart, manteniendo el compás
Fossa ovalis, дырка that was meant to close,
listen close, mi amor, that's the way the story goes
Septum muscular, septum membranoso too,
every wall's got a job — la sangre sabe qué hacer
[Outro]
Fossa ovalis... sealed but remembered,
membranous septum... thin but essential,
AV crossing... handle with care —
the walls tell the story, if you know where to stare