This site is intended for healthcare professionals

Go to /sign-in page

You can view 5 more pages before signing in

Septation of ventricles (embryology)

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

By the start of the fifth week of gestation, there are two primitive ventricles in continuity: the left one is derived from the true primitive ventricle; the right is derived from the bulbus cordis. Both differentiate to become trabeculated - rough-surfaced - internally. The muscular ridge between them on the caudal part of the inner wall starts to elongate cephalically by the growth of cells on the outside of the chamber and the regression of cells internally. This sheet is termed the muscular interventricular septum.

The growth of the muscular septum does not extend as far as the endocardial cushions. The space between the two provides a means of communication between the ventricles; it is termed the interventricular foramen. Eventually, the foramen is filled by:

  • the inferior elongation of the conus septum, the dividing sheet across the conus cordis
  • growth of cells from the inferior endocardial cushion along the superior margin of the intermuscular septum;

The interventricular foramen forms the membranous part of the interventricular wall in the mature, normal heart.


Create an account to add page annotations

Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page

The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

Connect

Copyright 2024 Oxbridge Solutions Limited, a subsidiary of OmniaMed Communications Limited. All rights reserved. Any distribution or duplication of the information contained herein is strictly prohibited. Oxbridge Solutions receives funding from advertising but maintains editorial independence.