| IAS | immunosuppressive acidic substance; infant apnea syndrome; insulin autoimmune syndrome; interatrial ... |
|---|---|
| IS | ileal segment; immediate sensitivity; immune serum; immunosuppression; impingement syndrome; incenti... |
| IVS | inappropriate vasopressin secretion; intervening sequence; interventricular septum; intervillous spa... |
| LS | lateral suspensor; left sacrum; left septum; left side; legally separated; leiomyosarcoma; length of... |
| RS | radioscaphoid; random sample; rating schedule; Raynaud syndrome; recipient's serum; rectal sinus; re... |
| 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) |
| septum bulbi urethrae | A fibrous septum in the interior of the bulb of the penis which divides it into two hemispheres. (05 Mar 2000) |
| septum canalis musculotubarii | A very thin horizontal plate of bone forming two saemicanals, the upper, smaller, for the tensor tympani muscle, the lower, larger for the auditory tube; its termination in the middle ear is the processus cochleariformis. Synonym: septum canalis musculotubarii, septum of musculotubal canal, septum tubae. (05 Mar 2000) |
| septum cervicale intermedium | A thin septum composed of glia fibre and leptomeningeal connective tissue in the cervical spinal cord marking the border between the gracile fasciculi and cuneatus of the dorsal funiculus. Synonym: septum cervicale intermedium. (05 Mar 2000) |
| septum clitoridis | An incomplete fibrous septum between the corpora cavernosa of the clitoris. Synonym: septum corporum cavernosorum clitoridis. (05 Mar 2000) |
| septum corporum cavernosorum clitoridis | An incomplete fibrous septum between the corpora cavernosa of the clitoris. Synonym: septum corporum cavernosorum clitoridis. (05 Mar 2000) |
| septum femorale | 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) |