Definitions
from The Century Dictionary.
- Fourfold; especially, pertaining to the corpora quadrigemina.
from the GNU version of the Collaborative International Dictionary of English.
- adjective Fourfold; having four similar parts, or two pairs of similar parts.
- adjective (Anat.) two pairs of lobes, or elevations, on the dorsal side of the midbrain of most mammals; the optic lobes. The anterior pair are called the
nates , and the posterior thetestes .
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective Having
four parts, or two pairs
Etymologies
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Examples
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The inferior colliculi (lower or posterior quadrigeminal bodies) are important auditory reflex centers.
IX. Neurology. 4e. Composition and Central Connections of the Spinal Nerves 1918
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By a similar thickening process its alar laminæ are developed into the quadrigeminal lamina.
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Dorsally, it is partly separated from the gray substance of the quadrigeminal bodies by the fibers of the lemniscus; ventral to it are the medial longitudinal fasciculus, and the formatio reticularis of the tegmentum.
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The superior colliculus (colliculus superior; superior quadrigeminal body; pregemina) is covered by a thin stratum (stratum zonale) of white fibers, the majority of which are derived from the optic tract.
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The inferior colliculus (colliculus inferior; inferior quadrigeminal body; postgemina) consists of a compact nucleus of gray substance containing large and small multipolar nerve cells, and more or less completely surrounded by white fibers derived from the lateral lemniscus.
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It is also known as the spino-quadrigeminal system of Mott.
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It would be at present an unwarrantable assumption to make, that these centers are therefore disconnected from the retina, at the optic thalami, the superior quadrigeminal bodies, or wheresoever.
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