septum

[sep´tum] (L.)

1. a wall or partition dividing a body space or cavity. Some are membranous, some are osseous, and some are cartilaginous; each is named according to its location. See also septal defect. adj., adj sep´tal.

2. nasal septum.

alveolar septum interalveolar septum.

atrial septum (septum atrio´rum cor´dis) interatrial septum.

atrioventricular septum the part of the membranous portion of the interventricular septum between the left ventricle and the right atrium.

deviated septum an injury or malformation of the nasal septum so that one part of the nasal cavity is smaller than the other; this is fairly common and seldom causes complications. Occasionally the deviation may handicap breathing, block the normal flow of mucus from the sinuses during a cold, or prevent proper drainage of infected sinuses. In some cases surgery (called partial or complete submucous resection) may be necessary to relieve the obstruction and reduce irritation and infection in the nose and sinuses.

interalveolar septum

1. one of the thin plates of bone separating the alveoli of the teeth in the mandible and maxilla. Called also interradicular septum.

2. one of the thin septa that separate adjacent pulmonary alveoli, containing connective tissue and the capillary network of the blood supply of the lung. Defs. 1 and 2 called also alveolar septum.

interatrial septum (septum interatria´le cor´dis) the partition separating the right and left atria of the heart; called also atrial septum.

interradicular septum interalveolar septum (def. 1).

interventricular septum (septum interventricula´re cor´dis) the partition separating the right and left ventricles of the heart; called also ventricular septum.

nasal septum a plate of bone and cartilage covered with mucous membrane that divides the nasal cavity.

septum lu´cidum septum pellucidum.

pellucid septum (septum pellu´cidum) the triangular double membrane separating the anterior horns of the lateral ventricles of the brain; called also septum lucidum.

septum pri´mum a septum in the embryonic heart, dividing the primitive atrium into right and left chambers. See also congenital heart defect.

rectovaginal septum the membranous partition between the rectum and vagina.

rectovesical septum a membranous partition separating the rectum from the prostate and urinary bladder.

septum of ventricles of heart (ventricular septum) (septum ventriculo´rum cor´dis) interventricular septum.

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References in periodicals archive

Abbreviations LHAS: Lipomatous hypertrophy of the atrial septum TEE: Transesophageal echocardiography TTE: Transthoracic echocardiography LAD: Left anterior descending artery RCX: Ramus circumflex RCA: Right coronary artery RA: Right atrium.

Lipomatous Hypertrophy of the Atrial Septum in a Patient Undergoing Coronary Artery Bypass Surgery

A separate issue is that mild heart defects, especially of the atrial septum, can be overdetected, particularly for infants born preterm who are under increased surveillance and whose hearts have yet to fully mature (Tanner et al.

Risk of congenital heart defects after ambient heat exposure early in pregnancy

However, with Ach (i.e., [Ach] = 0.03 [micro]M/L), the mutation significantly increased the CL (Figure 4(c)) and produced a conduction block in the direction toward the atrial septum; the action potential conduction in the direction toward the CT was sustained.

Isoprenaline: a potential contributor in sick sinus syndrome--insights from a mathematical model of the rabbit sinoatrial node

"It's also a big deal engineering-wise, because you have to fold the valve and then guide it through the atrial septum. Then you open it up." The atrial septum is the wall separating the heart's upper two chambers, the atria.

Percutaneous mitral valve replacement finally a reality: this life-saving procedure is approved in Europe, but is still a few years away from being available in the U.S

(1) Myxomas most commonly occur in the left atrium (90%) and are generally attached to the atrial septum in or adjacent to the fossa ovalis.

'Doctor, there is a lump in my heart'--a rare case of a ventricular myxoma

The atrial septum is the wall between the left and right atria (upper chambers) of the heart.

Rebirth of 23 lives

MVP is characterized by accumulation of mucinous material in valve leaflets, membranous and atrial septum, and mitral and tricuspid valve rings.

Skin biopsy may predict mitral valve prolapse

To the Editor.--We read the outstanding article by Miller and Tazelaar1 recently published in the Archives of Pathology & Laboratory Medicine about the main features of 5 cardiovascular pseudoneoplasms (inflammatory myofibroblastic tumor, hamartoma of mature cardiac myocytes, mesothelial monocytic cardiac excrescences, calcified amorphous tumor, and lipomatous hypertrophy of the atrial septum).

Cystic tumor of the atrioventricular node: a rare cardiac pseudoneoplastic lesion

When the atrial septum remains open, pulmonary venous blood that enters the left atrium flows into the right atrium, producing a left-to-right shunt.

Congenital cardiac anomalies

These are the criteria according to which the patient is suitable for percutanous closure of ASD using the Amplatzer ASD closure device: central defect; the defect with a modest deficit of one edge to 1-2 mm (aortic and inferior); an aneurysm of atrial septum with fenestration or central single defect; patients' age is older than three years.

Secundum atrial septal defect: results of percutaneous and surgical correction

Kalvaitis and his associates performed DE MRI exams on 62 patients with atrial fibrillation scheduled to undergo pulmonary vein antrum isolation and atrial septum de-bulking.

MRI flags atria prone to relapse of fibrillation

vignai in having closely arising and extended epigynal teeth, posteriorly situated atrium, and broad, round spermathecae but can be distinguished by the absence of atrial septum, anteriorly extended posterior atrial margin, and slightly separated spermathecae (Figs.

On the charitonovi species group of the spider genus Coelotes (Araneae: Amaurobiidae)