Lockdown Embryology with Prof Alice Roberts #12: Heart Septation

We take a look at the twisting heart tube, tying itself into a knot before partitions start to appear, dividing the left and right chambers of the heart - but incompletely. This partial partitioning holds the elegant solution to the challenge of kick-starting a separate circulatory loop for the lungs - at the moment of birth.

[@davidfoley3510]

Greetings from Cork, Ireland. I never knew you could draw/sketch so well. Watched all your tv shows, very interesting and informative.

[@fionagourley3038]

As a complete lay-person, that was fascinating. And so beautifully drawn and explained.

[@Yanquetino]

On this Thanksgiving Day here, I am soooo thankful to knowledgeable, talented, articulate, compassionate, humanist scholars like you who have truly enriched and enlightened my life. Thank you!

[@nml1930]

Amazing, thank you

[@michaelkyriacou7026]

Brilliant as always, thanks again Alice!! 😊❤️

[@cheekychappy1234]

Fascinating as always! The septum primum and secundum closing is of interest in our family as my father, in his 70s, discovered that he had a 3mm hole in the heart where the two septum didn't close properly. ( I assume the holes were just a little too large.) - As you can probably guess it didn't affect him and his health at all.

[@simonw621]

it's incredible how large the heart is during embryonic development....I guess it's the primary organ for initial development.......and that the brain and nervous system are secondary for further growth...

[@mustafabozoglan]

👏 👏 👏 ❤️❤️❤️

[@gazpitt8087]

😊

[@himsoni7112]

I've never taken interest in Biology as much as Now

[@Prasujith]

"Intervenous tubercle of lower" directs the svc blood to the right ventricle?

[@aliceroberts4107]

Not sure what the question is, but the deoxygenated blood flowing in via the SVC passes into the right atrium and through the developing tricuspid valve into the right ventricle.