File:Heart Looping Sequence.jpg
The Sequence of Events in Heart Looping
Week 4 to week 5 (GA 6 to 7 weeks)
- The heart begins as a straight tube then bends ventrally.
- Rotation brings the bulge of the ventral bend (predominantly the bulbus cordis and ventricle) to the right, forming a "C-shaped" loop (sometimes called "U-shaped").
- As the atrium is brought cranially, the poles of the heart converge. The heart now appears as an "S-shape", with the first bend in the S between the bulbus cordis and ventricle and the second bend between the atrium and sinus venosus.
- The bulbus cordis and arterial trunk move ventral to the atrium to form the later outflow tract. The atrium now lies superior to the ventricle.
|Begin Intermediate:||Primordial Heart Tube||Heart Tube Looping||Atrial Ventricular Septation||Outflow Tract||Heart Valves||Cardiac Abnormalities||Vascular Overview|
Cite this page: Hill, M.A. (2019, March 26) Embryology Heart Looping Sequence.jpg. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/File:Heart_Looping_Sequence.jpg
- © Dr Mark Hill 2019, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G
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|current||11:49, 14 March 2010||1,548 × 577 (85 KB)||Z3212774||category:Heart ILP Shows the sequence of events in heart looping. The heart begins as a straight tube then bends ventrally. Rotation brings the bulge of the ventral bend (predominantly the bulbus cordis and ventricle) to the right, forming a C-shaped|
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