| membranous septum | The small portion of the nasal septum anterior to the portion supported by the cartilage of the nasal septum. Synonym: pars membranacea septi nasi, membranous septum. (05 Mar 2000) |
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| Cloquet's septum | The delicate fibrous membrane that closes the femoral ring at the base of the femoral canal. Synonym: septum femorale, Cloquet's septum, crural septum. (05 Mar 2000) |
| comblike septum | Septum pectiniforme, the anterior portion of the septum penis which is broken by a number of slitlike perforations. Synonym: comblike septum. (05 Mar 2000) |
| muscular part of interventricular septum of heart | The thick muscular portion which comprises most of the interventricular septum of the heart. Synonym: pars muscularis septi interventricularis cordis, septum musculare ventriculorum. (05 Mar 2000) |
| crural septum | The delicate fibrous membrane that closes the femoral ring at the base of the femoral canal. Synonym: septum femorale, Cloquet's septum, crural septum. (05 Mar 2000) |
| posterior vein of septum pellucidum | Vein draining the posterior part of the transparent septum; it empties into the superior thalamostriate vein. Synonym: vena septi pellucidi posterior. (05 Mar 2000) |
| precommissural septum | See: septal area. (05 Mar 2000) |
| hanging septum | The deformity caused by an abnormal width of the septal portion of the alar cartilages. (05 Mar 2000) |
| heart septum | The thin membranous structure between the two heart atria or the thick muscular structure between the two heart ventricles. (12 Dec 1998) |
| proximal spiral septum | See: spiral septum. (05 Mar 2000) |
| scrotal septum | An incomplete wall of connective tissue and nonstriated muscle (dartos fascia) dividing the scrotum into two sacs, each containing a testis. Synonym: septum scroti. (05 Mar 2000) |
| septum | A dividing wall or partition, a general term for such a structure. The term is often used alone to refer to the septal area or to the septum pellucidum. (18 Nov 1997) |
| septum accessorium | An additional ridge forming the lower border of the limbus fossae ovalis. (05 Mar 2000) |
| septum, atrial | The wall between the two upper chambers (the right and left atrium) of the heart. (12 Dec 1998) |
| septum atrioventriculare | The small part of the membranous septum of the heart just above the septal cusp of the tricuspid valve that separates the right atrium from the left ventricle. Synonym: septum atrioventriculare, pars membranacea septi atriorum. (05 Mar 2000) |