Further, on each side of this infundibular tube are lying the two thick masses of the crura cerebri, the strands of fibres which connect the higher brain-region proper with the lower region of the medulla oblongata and spinal cord.
There are also special bundles of muscle fibers extending from the crura of the diaphragm and surrounding the esophagus, which contribute to tonic closure in the same way that a pinch-cock closes a rubber tube.
Anatomical studies have corroborated this finding by demonstrating a definite sphincteric mechanism consisting of muscle bands springing from the crura of the diaphragm and surrounding the esophagus at the under surface of the hiatus.
The walls of the hemispheres become first divided (Koelliker) into a superficial thinner layer of rounded elements, and a deeper and thicker epithelial layer, and between these the fibres of the crura cerebri soon interpose themselves.
The inner layer, together with the fibres from the crura cerebri, gives rise to the major part of the white matter of the hemispheres and to the epithelium lining the lateral ventricles.
The floor becomes thickened to form thecrura cerebri.
They are continuous with a similar layer of fibres on the floor of the mid-brain, where they constitute the crura cerebri.
Laterally, at the junction of the optic thalami and infundibulum, there are placed the fibres of the crura cerebri, which are probably derived from the walls of the infundibulum.
The middle lobe becomes the optic lobes (corpora bigemina or corpora quadrigemina in Mammalia) and the crura cerebri; while the posterior lobe becomes converted into the cerebellum and medulla oblongata.
The floor, which is bounded posteriorly by the pons Varolii, becomes the crura cerebri.
The basal laminae thicken to form the crura cerebri.
From the front of the pons two strong white bands, the crura cerebri or cerebral peduncles, pass forward and upward (see fig.
If a transverse section is made at right angles to the surface of the crura cerebri it will pass right through the mesencephalon and come out on the dorsal side through the corpora quadrigemina (see fig.
The longitudinal fibres ascend from the medulla oblongata and leave the pons by emerging from its upper surface as fibres of the two crura cerebri.
A covering; -- applied especially to the bundles of longitudinal fibers in the upper part of the crura of the cerebrum.
Quickly the donkey levavit crura Lifted its hind legs, fecitque longum With the wolf bravely, cum lupo bellum.
The incus has the stapedial end greatly developed, and the stapes has very thickcrura with hardly any canal.
The Didelphyidae on the other hand have the most highly developed ossicles, the malleus much resembling that of many Insectivores, and the stapes having two definite crura separated by a canal.
The crura in other monkeys do not diverge so much as in man and anthropoid apes.
The stapes has divergingcrura and consequently a wide canal.
If, however, it be firmly fixed, its crura will probably be broken.
There is no actual danger in the operation, but if the stapes is fixed or if much force is used, it is by no means difficult to fracture the crura of the stapes.
If only the crura be broken off, it does not matter; but if the stapes itself be dislodged from the fenestra ovalis, the subsequent symptoms may be attacks of vertigo, nausea, and vomiting.
A fine, blunt-pointed hook is now inserted between the crura of the stapes.
The two crura of the prepuce terminate in their upper and anterior extremities; they are of a florid colour, and in their natural state they are contiguous to, and cover the orifice of the urethra.
The second are the crura cerebelli, which unite in two large fasciculi, or pyramids, and are finally lost in the pons varolii.
Moreover as both these crura of the earth are unequal in size, so must the one influence the needle more than the other, and in this respect also there can be therefore no regularity in the lines without declination.
In the male the seminal ducts are still indeed separate, yet the two bodies or crura of the penis are frequently developed, and continue separate in the Serpents and Lizards, but are connate in the Tortoises.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "crura" in a variety of sentences. We hope that you will now be able to make sentences using this word.
