colliculus

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colliculus

[kə′lik·yə·ləs]
(anatomy)
Any of the four prominences of the corpora quadrigemina.
The anterolateral, apical elevation of the arytenoid cartilages.
(neuroscience)
The elevation of the optic nerve where it enters the retina.
References in periodicals archive ?
In the other 3 orally inoculated animals, spongiosis was characterized by fewer vacuoles and was restricted to the striatum (Figure 2, panel B), thalamus, colliculi, and brainstem.
To do this, axons in the fascicular portion of the 4th nerve first travel in a posterior direction (ie opposite to the location of the orbit) around the edge of the PAG to emerge from the brainstem further posteriorly behind the inferior colliculi, having crossed the midline within the superior medullary velum, a thin sheet of tissue forming the superior border of the 4th ventricle between the upper pons and cerebellum.
The region designated "brainstem" includes the midbrain, colliculi, pons, and medulla oblongata (but not cervical spinal cord), as well as the thalamus.
Representative samples were taken from cortex, thalamus, hippocampus, midbrain, colliculi, puns, obex, medulla oblongata, and cerebellum.
Visual inspection of these brains confirmed that the volume of cerebral cortex was reduced dramatically by a dose of 25 mg/kg, as indicated by the exposed dorsal surface of both inferior and superior colliculi (Figure 1).
The region designated "midbrain + brainstem" includes the midbrain, colliculi, pons, and medulla oblongata (but not cervical spinal cord), as well as the thalamus.