Septum

Definition

In the context of heart anatomy, a septum is a wall or partition that divides the heart into chambers, such as the left and right sides. This structure is critical in ensuring that oxygen-rich blood is kept separate from oxygen-poor blood.

Related terms

Atria:

The upper chambers of the heart where blood enters, either from the body or lungs.

Ventricles:

The lower chambers of the heart responsible for pumping blood out to the lungs and rest of the body.

Pulmonary circulation: The path of blood flow from the right side of the heart through to the lungs to receive oxygen and back to the left side of the heart