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Septum
A septum, in general, is a wall separating two cavities. The word is Latin and literally means "something that encloses".
The term is most commonly used in anatomy and biology:
- the septum nasi, or simply septum, is the cartilage wall separating the two nostrils
- the interventricular septum is the wall separating the two halves of the heart
- the septum is also a dividing structure in the brain
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