| aortopulmonary septum | The spiral septum which, during development, separates the truncus arteriosus into a ventral pulmonary trunk and dorsal aorta. See: bulbar ridge. (05 Mar 2000) |
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| atrial septum | The wall between the two upper chambers (the right and left atrium) of the heart. (12 Dec 1998) |
| atrioventricular septum | 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) |
| Bigelow's septum | A bony spur springing from the underside of the neck of the femur above and anterior to the lesser trochanter, adding to the strength of this part of the bone. Synonym: Bigelow's septum. (05 Mar 2000) |
| bony nasal septum | The bones supporting the bony part of the nasal septum; these are the perpendicular plate of the ethmoid, the vomer, the sphenoidal rostrum, the crest of the nasal bones, the frontal spine, and the median crest formed by the apposition of the maxillary and palatine bones. Synonym: septum nasi osseum. (05 Mar 2000) |
| bony part of nasal septum | The major portion of the nasal septum supported by the vomer and the perpendicular plate of the ethmoid. Synonym: pars ossea septi nasi. (05 Mar 2000) |
| bulbar septum | An obsolete term for spiral septum. (05 Mar 2000) |
| vein of septum pellucidum | See: anterior vein of septum pellucidum, posterior vein of septum pellucidum. (05 Mar 2000) |
| ventricular septum | <anatomy> A muscular wall which separates the left ventricle from the right ventricle. The heart's conduction system travels through the ventricular septum. Damage to the ventricular septum (for example heart attack) can result in cardiac conduction abnormalities. (12 Jan 1998) |
| rectovaginal septum | The fascial layer between the vagina and the lower part of the rectum. Synonym: septum rectovaginale. (05 Mar 2000) |
| rectovesical septum | A fascial layer that extends superiorly from the central tendon of the perineum to the peritoneum between the prostate and rectum. Synonym: septum rectovesicale, Denonvilliers' aponeurosis, rectovesical fascia, Tyrrell's fascia. (05 Mar 2000) |
| cartilage of nasal septum | A thin cartilaginous plate located between vomer, perpendicular plate of the ethmoid, and nasal bones, and completing the nasal septum anteriorly. Synonym: cartilago septi nasi, cartilage of nasal septum, cartilaginous septum, pars cartilaginea septi nasi, quadrangular cartilage, septal cartilage. (05 Mar 2000) |
| cartilaginous septum | A thin cartilaginous plate located between vomer, perpendicular plate of the ethmoid, and nasal bones, and completing the nasal septum anteriorly. Synonym: cartilago septi nasi, cartilage of nasal septum, cartilaginous septum, pars cartilaginea septi nasi, quadrangular cartilage, septal cartilage. (05 Mar 2000) |
| gingival septum | interdental papilla |
| cavity of septum pellucidum | A slitlike, fluid-filled space of variable width between the left and right transparent septum, which occurs in less than 10% of human brains and may communicate with the third ventricle. Synonym: cavum septi pellucidi, Duncan's ventricle, fifth ventricle, pseudocele, pseudoventricle, sylvian ventricle, ventricle of Sylvius, ventriculus quintus, Vieussens' ventricle, Wenzel's ventricle. (05 Mar 2000) |