septuaryt (septuari)

[L. septem, seven (after septua ( gint )), + -ary.] Something com posed of seven; a week. Ash. septulate (sep'tū-lat), a. [NL. * septulatus, septulum, a little partition, inclosure: see sep tulum.] 1. In zool. and an at., having a septulum or septula.-2. In bot., noting fruits hav ing imperfect or false septa. septulum (sep'tū-lum), n.; pl. septula (-lä). [NL., dim. of L. sæptum, septum, a partition: see septum.] A little septum or small partition. Septula renum, inward prolongations of the cortical substance of the kidneys, extending between the pyramids as far as the sinus and bases of the papillæ, Also called columnæ Bertini or columns of Bertin, and cortical columns. septum (sep'tum), n.; pl. septa (-tä). [NL., close, between two cavities, or a structure which divides a part or an organ into separate portions; a di epiment. In vertebrates the formations known as septa are most frequently situated in the vertical longitudinal median line of the body, but may be transverse or otherwise disposed. A number of them are specified by qualifying words. See phrases following. (c) In corals, a calcified mesentery; one of the six or more vertical plates which converge from the wall to the axis of the visceral space, dividing this into a number of radiating locu li or compartments. Each septum appears single or simple, but is really a duplicature of closely apposed plates, just as the mesentery itself is a fold. They are to be distinguished from the horizontal di epiments, or tabulæ, which may cut them at right angles. They are variously modified in details of form, may be connected by synapticulæ, and are divided, according to their formation, into primary, secondary, and tertiary. (d) In conch., one of the transverse partitions which separate the cavity of the shell of a cephalopod into chambers. (e) In Vermes, a sort of diaphragm, a series of which IMG:content-0639.png:[ocr errors] S 2 IMG:content-0640.png:[ocr errors] 1. Fruit of Poppy, cut transversely to show the 12 septa (S) with the seeds. 2. Diagram of same, the seeds omitted. tozoa, the wall between any two compartments of the test, as of a foraminifer. Branchial, crural, inter muscular, nasal, pectin i form, pericardial septum. See the adjectives. - Septum aorticum, the aortic or anterior segment of the mitral valve. - Septum atrium, or septum auricula rum, the partition between right and left auricles of the heart. It is perfect in the adults of the higher vertebrates, as mammals and birds, the but in the embryo is perforated by an opening called foramen ovale, from its shape in man. Septum cеге been same tepturis partition between the right and left cavities of the heart. -Septum crurale, a layer of condensed areolar ti ue which closes the femoral ring in man, serves as a barrier to the protrusion of a femoral hernia, and is perforated for the pa age of lymphatics: badly so named by J. Cloquet, and better called septum femorale. Septum femorale, the septum crurale. H. Gray, Anat. (ed. 1888). - Septum linguæ, the partition of the tongue; a vertical median layer of fibrous ti ue dividing the tongue into right and left halves. It sometimes includes a cartilarod, as the lytta or so-called "worm" of a dog's tongue. See lytta. Septum lucidum, the median partition of the lateral ventricles of the brain, inclosing the camera, pseudocæle, or so-called fifth ventricle. Also called septum pellucidum, septum medium, septum ventriculorum, ventricular septum, septum me dull are tri an gul are. See cut under corpus. - Septum narium, the partition between the right and left nasal cavities or meatus of the nose. In man it is formed chiefly by the mes ethmoid, or perpendicular plate of the ethmoid, the vomer, and the triangular cartilage of the nose. - Septum nas i. Same as sep tum narium. In zoology it is often restricted to the surface between the openings of the right and left nostrils, which may be of this or that character, deeply cleft as in the hare, hairy or naked, etc. - Septum orbitale or orbit arum, the orbital partition; any formation which separates the right and left eye-sockets. The term is le frequently used in relation to mammals, whose eyes are generally small and far apart, than among lower vertebrates, as birds, whose orbits are very large comparatively, and separated only by a thin vertical plate of bone, which may be perforated, or so far defective that the opposite orbits are thrown into one large cavity. - Septum pectin i for me, the pectinated septum of the penis, a median vertical partition between the right and left cavernous bodies of that organ. In man it is a dense, firm fibrous structure with many vertical slits, through which the blood-ve els of the opposite sides communicate freely, this comb-like appearance giving the name. It sometimes includes an o ification, the os penis or penis-bone, as in the dog, racoon, etc. Also called septum penis. Septum pont is, the septum of the pons Varolii. - Septum recto vag in ale, the wall which separates the rectal from the vaginal cavity. - Septum scroti, the partition between the right and left cavities of the scrotum. - Septum sphenoid ale, the mesial partition between the sphenoidal sinuses. - Septum trans ver sum, the di aphragm; the transverse partition between the thoracic and abdominal cavities. - Septum ventriculorum, or ventricular septum. (a) The partition between the right and left ventricles of the heart. (b) Same as septum lucidum.