Corpus: Interventricular septum
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Synonyms: ventricular septum, ventricular septum
English:
Definition[Bearbeiten]
The interventricular septum or ventricular septum is a muscular septum in the heart that separates the two ventricles.
Anatomy[Bearbeiten]
The border between the right and left ventricle (and thus also the position of the ventricular septum) is externally characterised by two grooves:
- Sulcus interventricularis paraconalis: located left-cranially, facing the left chest wall
- Sulcus interventricularis subsinuosus: points to the right caudal side, is located ventral to the sinus of the vena cava
Due to the oblique course of the cardiac axis from right dorsocranial to left ventrocaudal, the ventricular sulcus is also oblique to the longitudinal axis of the animal. The right ventricle is therefore located to the right and cranial to the left.
The musculature of the ventricular septum can be divided into a subepicardial, a middle and a subendocardial layer, with the muscle fibres merging from one layer into the other. In principle, therefore, the same muscle fibres are involved in all layers, which enable the formation of the three-layer structure through an alternating direction of course.
Sources[Bearbeiten]
- Salomon FV, Geyer H, Uwe G. 2008. anatomy for veterinary medicine. 2nd, updated and expanded edition. Stuttgart: Enke Verlag in MVS Medizinverlage Stuttgart GmbH & Co. KG. ISBN: 978-3-8304-1075-1
- Nickel R, Schummer A, Seiferle E. 2004. Textbook of Domestic Animal Anatomy, Volume III: Circulatory System, Skin and Skin Organs. 4th, unchanged edition. Stuttgart: Parey in MSV Medizinverlage Stuttgart GmbH & Co. KG. ISBN: 978-3-8304-4164-9