Molecular Classification
Tissue, Cardiac Muscle, Connective Tissue
Other Names
Atrial Septum, Ventricular Septum, Interventricular Septum
Disease Roles
Congenital heart diseaseAtrial septal defects (ASD)Ventricular septal defects (VSD)

Cardiac Septal Tissue Overview

Cardiac septal tissue refers to the specialized wall of tissue that separates the left and right sides of the heart. This structure is essential for proper cardiac function, ensuring that oxygenated and deoxygenated blood remain separated as they circulate through the body. The cardiac septum consists of two main components: the atrial septum (separates the left and right atria) and the ventricular septum (separates the left and right ventricles). It is composed primarily of cardiac muscle fibers with connective tissue elements. Abnormalities, such as septal defects, can lead to significant health problems.

Mechanism of Action

Biological Functions

Separation of oxygenated and deoxygenated blood
Mechanical support for cardiac contraction
Housing cardiac conduction system components
Structural integrity of the heart

Disease Associations

Congenital heart disease
Atrial septal defects (ASD)
Ventricular septal defects (VSD)
Cardiac arrhythmias
Heart failure
Stroke
Hypertrophy

Safety Considerations

  • Risk of paradoxical embolism in septal defects
  • Arrhythmias due to altered conduction pathways in hypertrophied septum
  • Complications from surgical repair of septal defects