pretectum

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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.

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fibre nucleus oculomotor nerve optic nerve palsy pathway reflex superior Colliculi tectum of the mesencephalon			presubiculum presuggestion component Presumed Consent presumed ocular histoplasmosis presumption presumptive signs presuppurative presurgical impression presuturing preswing stance stage presymptomatic presymptomatic disease presymptomatic testing presynaptic presynaptic membrane presynaptic noradrenergic reuptake antagonist presyncopal dizziness presyncope presystole presystolic presystolic gallop presystolic murmur presystolic thrill pretarsal pretectal pretectum preteen preterm preterm birth preterm contractions preterm infant preterm infant organization preterm labor preterm low birthweight prethyroid pretibial pretibial fever pretibial myxedema pretreatment pretrial discovery pretty good privacy Pretty Leprosy Prevacid Prevacid triple therapy prevailing fee prevalence prevalent prevalidation prevascular phase Preven PREVENT			Pretax contribution Pretax Contributions Pretax Earnings Pretax Earnings Pretax earnings or profits Pretax Group pretax income pretax income pretax income Pretax Incomes pretax loss Pretax Profit Pretax Profits Pretax rate of return Pretax Rates of Return Pretax Return Pretax Return on Assets Pretax Returns Pretax Transportation Benefits Plan pretax writedown Pretax Writedowns pretax yield Pretax Yields PRETC Prête-Moi Ta Plume PRETECHREP pretectal pretectum preteen preteen preteen Preteen hardcore Preteen hardcore Preteen hardcore preteenager Preteens Preteens pretematuralism Pretemporal pretence pretence pretence pretences pretend pretend pretend Pretend (song) Pretend (song) pretend not to see pretend that black is white pretend to pretend to be Pretendant pretended pretended pretended pretended pretendedly

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