Arising as a long tendon from the sterno-scapular ligament, it passes the axilla by means of a fibrous pulley, accompanies the axillary vessels and nerves along the humerus, and is inserted by a few fleshy fibres on the base of the last two or three cubital quills.
To make the ligament, a very large number of exceedingly fine copper wires laid close together are soldered to the upper surface of the upper trunnion.
There is a "stay" called the "ligament" which runs from the hinder end of the proboscissheath to the posterior end of the body.
The ligament is external, and the hinge carries cardinal teeth in each valve.
Near the mid line of the body, and at right angles to the last, another reflection, the falciform ligament, runs forward, and the line of attachment of this indicates the junction of the right and left lobes of the liver.
The attachment of the falciform ligament is continued down it.
To the left of this is the left lobe of the liver, separated from the quadrate lobe by the umbilical fissure in which lies the round ligament of the liver, the remains of the umbilical vein of the foetus.
From its lower margin the right lateral ligament is reflected on to the diaphragm.
A similar fold passes from the tip of the left lobe as the left lateral ligament, and both these are the lateral margins of the coronary ligament.
When these have united the Spigelian lobe re of ductus venosus mental tuberosity ageal groove End of right suprarenal vein Suprarenal impression R; ght end of caudate lobe Uncovered area of right lobe Renal impression Attachment of right lateral ligament Fissu Portal fissure Umbilical fissure Quadrate lobe Portal vein Gall bladder Duodenal impression 0 Oesoph Cohc impressio; From A.
The round ligament and the remains of the ductus venosus are hidden in the depths of their fissures.
Ligament in the adult, lying 11, The left lateral lobe.
'crin e' L ore to the shell but to sever also a strong elastic ligament, or spring resem bling india-rubber, joining the two shells about the umbonal area.
Below this hinge each shell becomes concave, above it each shell rises a little to form the umbo, and it is into this ridge-like upgrowth of each valve that the elastic ligament or spring is fixed (fig.
The adductor muscles placed in the concavity of the shells act upon the long arms of the lever at a mechanical advantage; their contraction keeps the shells shut, and stretches the ligament or spring h.
On the other hand, the ligament h acts upon the short arm formed by the umbonal ridge of the shells; whenever the adductors relax, the elastic substance of the ligament contracts, and the shells gape.
It is on this account that the valves of a dead Lamellibranch always gape; the elastic ligament is no longer counteracted by the effort of the adductors.
The ligament is simple in Anadonta; in many Lamellibranchs it is separated into two layers, an outer and an inner (thicker,and denser).
It is to be remembered that the whole of the cuticular hard product produced on the dorsal surface and on the mantle-flaps is to be regarded as the " shell," of which a median band-like area, the ligament, usually remains uncalcified, so as to result in the production of two valves united by the elastic ligament.
7) set in the firm substance of the adult tubular shell, which has even replaced the ligament, so that the tube is complete.
- Diagram of a section of a Lamellibranch's shells, ligament and adductor muscle.
A, b, right and left valves of the shell; c, d, the umbones or short arms of the lever; e, f, the long arms of the lever; g, the hinge; h, the ligament; i, the adductor muscle.
Limopsidae.-Shell orbicular, hinge curved, ligament longer transversely than antero-posteriorly; foot elongate, pointed anteriorly and posteriorly.
Mytilidae.-Shell inequilateral, anterior end short; hinge without teeth; ligament external.
Pernidae.-Shell very inequilateral; ligament subdivided; mantle open throughout; anterior adductor absent.
Dimyarian, with orbicular and almost equilateral shell; adherent; hinge without teeth Sand ligament internal.
Crassatellidae.-Shell thick, with concentric striae, ligament external; foot short.
Tellinidae.-External gill-plate directed upwards; siphons separate and elongated; foot with byssus; palps very large; ligament external.
Chamidae.-Shell with sub-equal valves and prominent umbones more or less spirally coiled; ligament external.
- Siphons very long and quite separate; foot large; shell oval, elongated, ligament external.
- Siphons united for the greater part of their length, and with a circlet of tentacles near their extremities; foot reduced; shell gaping; ligament internal.
- Mantle extensively closed; a fourth pallial aperture behind the foot; siphons long and united; shell elongated, a spoon-shaped projection for the ligament on each valve.
Ligament wanting; shell gaping, with a styloid apophysis in the umbonal cavities.
- Shell thin, inequivalve, free; ligament internal; siphons very short.
6) the Fallopian tube and ovary Parovarium Ligament Fallopian tube I Ovary of ovary Hydatid Fimbriated end of tube Round ligament Broad ligament are pulled out from the uterus; this, as has been explained, is not the position of the ovary in the living body, nor is it of the tube, the outer half of which lies folded on the front and inner surface of the ovary.
From each side of the uterus the peritoneum is reflected outward, as a two-layered sheet, to the side wall of the pelvis; this is the broad ligament, and between its layers lie several structures of importance.
Above, there is the Fallopian tube, already described; below and in front is the round ligament; behind, the ovary projects backward, and just above this, when the broad ligament is stretched out as in fig.
The round ligament is a cord of unstriped muscle which runs from the lateral angle of its own side of the uterus forward to the internal abdominal ring, and so through the inguinal canal to the upper part of the labium majus.
The epoophoron or parovarium is a collection of short tubes which radiate from the upper border of the ovary when the broad ligament is pulled out as in fig.
The Uterus and Broad Ligament seen from behind (the broad ligament has been spread out).
A, b and c, the isthmus tubae, the ligament of the ovary, and the round ligament of the right side cut short.
In the anterior part of the gland are seen bundles of striped muscle fibres, which are of interest when the comparative ana Ampulla of vas deferens tomy of the gland Cut end of great sacrois studied: they are 1 sciatic ligament Common ejaculatory duct Levator ani than in old prostates.
Its more pointed lower end iš attached to the uterus by the ligament of the ovary, while its anterior border has a short reflection of peritoneum, known as the mesovarium, running forward to the broad ligament of the uterus.
Ligament, both of which it pierces.
The claws are large, strongly compressed, sharp, and exhibit the retractile condition in the highest degree, being drawn backwards and upwards into a sheath by the action of an elastic ligament so long as the foot is in a state of repose, but exerted by muscular action when the animal strikes its prey.
Now this ligament is inserted into the primary bars some distance below the upper limits of the gill-clefts, and it therefore follows that, corresponding with each tongue-bar, the atrial cavity is produced upward beyond the insertion of the ligament into a series of bags or pockets, which may be called the atrial pouches.
Disturbance, the formation of the elongated ligament, and the subsequent transformation of the ligament into a spherule, could be examined with ease.
In consequence of the transformation being in a more advanced stage at the forward than at the hinder end, the ligament remains for a moment connected with the mass behind, when it has freed itself from the mass in front, and thus the resulting spherule acquires a backwards relative velocity, which of necessity leads to a collision.