Cardiac Septum

Cardiac Septum

Cardiac septa

The cardiac septa refer to the muscular walls located between the two atria (interatrial septum) and the two ventricles (interventricular septum). (1,3)

Interatrial septum:

The interatrial septum is a thin septum that separates the two atria. (1)

Fossa ovalis of right atrium:

The fossa ovalis is a depression located in the lower part of the interatrial septum. It is located at the site of the former foramen ovale and is especially noticeable after birth. (1,5)

Limbus fossae ovalis:

The limbus fossae ovalis is a prominent margin that borders the oval fossa, It is more proeminent above and on the margins. (1,5)

Atrioventricular septum:

An offset in the attachment of the two atrioventricular valves situates a portion of the ventricular septum in an atrioventricular position. This particular section is recognized as the atrioventricular septum. It is positioned posterior to the hinge of the tricuspid valve. (4, 6)

Interventricular septum:

The ventricular septum, also known as the interventricular septum, is a muscular structure that divides the left and right ventricles of the heart..It cosists of a thick muscular part, and a thin membranous part. (1,3)

Muscular part of interventricular septum:

It is the thick muscular part of the interventricular septum. (1,7)

Membranous part of interventricular septum:

The membranous septum is primarily composed of fibrous tissue and represents the thin part of the interventricular septum. (1, 2, 3 )

Bibliography

1.Gray H, Lewis W. Angiology. In: Anatomy of the human body. 1918. p. 526–42

2. Ho SYen. Anatomy for cardiac electrophysiologists : a practical handbook. Minneapolis: Cardiotext Pub; 2012. 195–213 p.

3. Faletra FF, Pandian NG, Ho SY. The Cardiac Septum. In: Anatomy of the Heart by Multislice Computed Tomography. Wiley-Blackwell; 2009. p. 81-87.

4. Faletra FF, Pandian NG, Ho SY. The Cardiac Valves. In: Anatomy of the Heart by Multislice Computed Tomography. Wiley-Blackwell; 2009. p. 55–80.

5. Fritsch H, Kuehnel W. Color Atlas of Human Anatomy. Vol. 2, Color Atlas and Textbook of Human Anatomy. 2005. 10–42 p.

6. Zhu X. Cardiac Anatomy: Nomenclature and Abbreviations. In: Zhu X, editor. Surgical atlas of cardiac anatomy. Beijing: Springer Netherlands; 2014. p. 1–11.

7. Moore K, Dalley A, Agur A. Clinically Oriented Anatomy. Vol. 7ed, Clinically oriented anatomy. 2014. 132–151 p.

The structure and organization of anatomical terms used in this text follow the guidelines provided by FIPAT (2019) in their publication: FIPAT. (2019). Terminologia Anatomica (2nd ed.). FIPAT.library.dal.ca. Federative International Programme for Anatomical Terminology. Retrieved May 7, 2023, from https://fipat.library.dal.ca/TA2/