The superior peduncles, which descend from the corpora quadrigemina of the cerebrum, form connexions mainly with the corpus dentatum.
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.
Dorsal to the Sylvian aqueduct is a layer called the lamina quadrigemina and on this the corpora quadrigemina rest.
If the velum interpositum be now carefully raised from before backward, the optic thalami, third ventricle, pineal body and corporaquadrigemina are exposed.
The pineal body is a reddish cone-shaped body situated upon the anterior pair of the corpora quadrigemina (see figs.
We see the quadrigemina on the back of the ascending fibres and their connection by fibres with the cerebellum behind, as they connect with the thalami in front.
The engraving shows the fibres connecting the quadrigemina with the cerebellum, and a channel under them (aqueduct of Sylvius) connecting the ventricles of the cerebrum with those of the spinal cord.
The quadrigemina are distinguished also as the location of the pineal gland, which rests upon them, to which we may ascribe important psychic functions.
The fibres from the cerebellum to the quadrigemina are shown, and the space at the back of the medulla, called the fourth ventricle.
The corpora quadrigemina are mostly covered by the cerebrum, and the oblongata by the cerebellum.
The third vesicle, the middle brain (m), produces the corpora quadrigemina and the aqueduct of Sylvius.
In his work on the anatomy of the brain,[147] Tiedemann established the homology of the optic lobes in birds by comparing them with foetal corpora quadrigemina in man (see Serres, Ann.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "quadrigemina" in a variety of sentences. We hope that you will now be able to make sentences using this word.
