This is the 3rd of 3 rotation movies with structures labelled showing the development of heart ventricular septation.
Features shown are:
fusion of the bulbar ridges to close the membranous portion of the ventricular septum
separation of the aortic outflow of pulmonary and systemic (aortic arch).
Quicktime: H3l.mov (856 Kb)
First movie of heart septation. Early- First of 3 unlabelled rotation movies showing the development of heart ventricular septation.
The link below the images and text labelled Quicktime with the movie name and (file size) will open only the movie in a new window.
Quicktime: H1u.mov (748 Kb)
Second movie of heart septation. Membranous- Second of 3 unlabelled rotation movies showing the development of heart ventricular septation.
Quicktime: H2u.mov (680 Kb)
Third movie of heart septation. Closure- Third of 3 unlabelled rotation movies showing the development of heart ventricular septation.
Quicktime: H3u.mov (672 Kb)
Third movie of heart septation labelled. Closure- Third of 3 rotation movies showing the development of heart ventricular septation with labels on structures at this stage.
Quicktime: H3l.mov (856 Kb)
Heart Looping (451Kb)
Atrial Septation (995Kb)
Realignment (306Kb)
Ventricular Septation (646Kb)
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The heart is one of the earliest forming and functioning organs in the embryo, yet does not complete its development until postnatally with the functioning of the pulmonary (lung) system.
In humans, the transformation of a simple tube into a complex 4-chambered pump with 2 separate outflows is a complex process, and students often have difficulty understanding the latter parts of its development.
The models demonstrate ventricular septation and separation of the cardiac outflow (systemic/pulmonary).
The animations show cardiac tube folding, septation and the differences in fetal and postnatal circulation. UNSW Embryology has many movies to show some of the dynamic changes that occur during embryonic development. These have been grouped together on separate pages (listed in righthand menu) that can be also be opened from a pull down menu on each page.
Internet users note that some of these movies are large and will take some time to download depending on your connection speed.
Both Mac and PC computers require the Quicktime plug-in to be present in your browser or on your computer.
CD users can find Quicktime on the CD or the latest version can be downloaded from here Quicktime
Please email Dr Mark Hill if you wish to make a comment about this current project.