| Dictionary, Encyclopedia and Thesaurus - The Free Dictionary 1,733,640,839 visitors served. |
|
Dictionary/ thesaurus | Medical dictionary | Legal dictionary | Financial dictionary | Acronyms | Idioms | Encyclopedia | Wikipedia encyclopedia | ? |
pretectum |
Also found in: Wikipedia | 0.02 sec. |
|
pretectum Either of the midbrain structures located anterior to the superior colliculus. Each pretectum contains several nuclei including the pretectal olivary nucleus, the nucleus of the optic tract and the anterior, medial and posterior pretectal nuclei. A small number of retinal fibres leave the optic tract before the lateral geniculate bodies and synapse mainly in the pretectal olivary nucleus and in the nucleus of the optic tract. Axons from the pretectal olivary nucleus project to the Edinger-Westphal nuclei. Neurons in the pretectal olivary nuclei are involved in pupillary constriction. See pupil light reflex; tectum of the mesencephalon. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
|
| ? Mentioned in | |
|---|---|
|
| Medical Dictionary |
| Free Tools: |
For surfers:
Free toolbar & extensions |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|---|