The moderator band is really one of the second kind of columnae carneae which stretches from the septal to the anterior wall of the ventricle.
On the posterior or septal wall, between the two auricles, is an oval depression, called the fossa ovalis (fig.
On the septal wall is a small depression like the mark of a finger-nail, which corresponds to the anterior part of the fossa ovalis and often forms a valvular communication with the right auricle.
The species represented in Figure 490 is found in most localities, and presents the zigzag character of the septal lobes in perfection.
The lamellae or septalsystem in each cup are divided by four prominent ridges into four groups.
But the circumstance is alluded to for the purpose of comparing these dolomitized portions of the skeleton with the specimens from Burgess, in which the replacement of the septal layers by dolomite appears to be the general condition.
Chambers large, flattened, irregular, with numerous rounded extensions, and separated by walls of variable thickness, which are penetrated by septal orifices irregularly disposed.
On this primary layer grew a delicate calcareous shell, perforated by innumerable minute tubuli, and by some larger pores or septal orifices, while supported at intervals by perpendicular plates or pillars.
No separate spermathecae or septal chambers for the development of the ova and sperm.
It is indeed only among the Eudrilidae that the enclosure of the ovaries in septal sacs is at all general.
By means of the finger introduced into the obstructed nostril, or suitable septal forceps, these four flaps are snapped across at their bases so as to overcome their tendency to spring back.
This is not infrequently necessary when there is a general hypertrophy--as in the compensatory hypertrophy of septal scoliosis (Fig.
A strip of septal cartilage is always left above, beneath the crest of the nose.
In the worst forms of stenosis from septal deformity they are useless.
A subtropical species, ranging from Guatemala to the northern border of Sinaloa in northern Mexico; remarkable for the length of the peduncle of the cone and for the prevalence of septal resin-ducts in the leaf.
The septal duct is peculiar to a few species (oocarpa, tropicalis, and less frequently Pringlei and Merkusii).
The internal andseptal ducts appear to be confined to the species of warm-temperate or tropical countries.
In the majority of the Ammonoids the septal necks are continued forwards from the septa to which they belong, and such forms are termed prosiphonate.
In many fossil forms these septal necks are continued from the septum from which they arise to the next, so that the siphuncle is enclosed in a complete secondary calcareous tube.
In the majority of Nautiloids the septal necks are directed backwards, and they are said to be retrosiphonate.
Shell smooth, slender, nearly spindle-shaped, without external strictures, but with seven or eight internal septal rings.
Shell rough, slender, pear-shaped, twice as long as broad, with five internal septal rings.
Shell smooth, slender, spindle-shaped, without external strictures, but with ten to twelve internal septal rings.
Shell rough, broad, pear-shaped, almost as broad as long, with three internal septal rings.
Shell conical, without external strictures, but with two internalseptal rings.
The mention of absence of septal ridges in males of T.
Septal ridges present; tubercles on anterior edge of carapace present or absent 2 Septal ridges absent; anterior edge of carapace lacking tubercles or raised prominences 19 2.
The absence of septal ridges distinguishes muticus from ferox, all subspecies of spinifer, and ater (ridges are reduced in males of ater).
Septal ridges present; external and proportional characteristics variable (see accounts of subspecies); range in length of plastron (cm.
Both sexes of all ages can be distinguished from muticus by the presence of knoblike tubercles on the anterior edge of the carapace, and septal ridges.
I have slit the outer edge of the nostril on several specimens of muticus, and have not noticed an indication of a septal ridge.
The septal ridges in the only known adult male are reduced; a small, whitish ridge is present on the medial surface of each nostril, but is not conspicuous in anterior view.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "septal" in a variety of sentences. We hope that you will now be able to make sentences using this word.
