corona radiata


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corona

 [kŏ-ro´nah] (pl. coro´nae, coronas) (L.)
crown; in anatomic nomenclature, an eminence or encircling structure that resembles a crown. adj., adj cor´onal.
corona radia´ta
1. the radiating crown of projection fibers passing from the internal capsule to every part of the cerebral cortex.
2. an investing layer of radially elongated follicle cells surrounding the zona pellucida of the ovum; it accompanies the oocyte during ovulation.

co·ro·na ra·di·a·ta

1. a fan-shaped fiber mass on the white matter (substance) of the cerebral cortex, composed of the widely radiating fibers of the internal capsule;
2. a single layer of columnar follicular cells derived from the cumulus oophorus that anchor on the zona pellucida of the oocyte in a maturing ovarian follicle.
3. a pattern of fine lines radiating around a solitary pulmonary nodule, passing through a zone of relative lower opacity, as seen radiologically.
Synonym(s): radiate crown

co·ro·na ra·di·a·ta

(kŏ-rō'nă rā-dē-ā'tă) [TA]
1. A fan-shaped fiber mass on the white matter of the cerebral cortex, composed of the widely radiating fibers of the internal capsule.
2. A single layer of columnar cells derived from the cumulus oophorus, which anchor on the pellucid zone of the oocyte in a secondary follicle.
Synonym(s): radiate crown.

corona radiata

1. The radiating ‘crown’ of nerve fibre bundles running up from the INTERNAL CAPSULE of the brain to all parts of the CORTEX.
2. A layer of cells radiating outwards from the maturing OVUM and which persist for a time after ovulation.
References in periodicals archive ?
Legends: Primary oocytes (PO), zona pellucida (ZP), antrum (A), theca interna (TI), theca eksterna (TE), granuloza cells (GH), corona radiata (CR), cumulus oophorus (CO).
Legends: Primary oocytes (PO), zona pellucida (ZP), antrum (A), theca interna (TI), theca eksterna (TE), granuloza cells (GH), Secondary oocytes (PO), corona radiata (CR), cumulus oophorus (CO).
Comparison between patients with different MS subtypes and CIS revealed higher ADC values in 3/8 regions (corona radiata anterior and posterior and genu of corpus callosum) in SPMS and in 1/8 regions (corona radiata anterior) in PPMS, but no differences were found between RRMS and CIS (P > 0.005, Figure 2(a)).
In SPMS, the ADC values of the corona radiata posterior correlated with the levels of MIF (r = 0.614, P = 0.007, Figure 3(c)), while in PPMS, the ADC values of the thalamus correlated with sTNF-[alpha] (r = 0.616, P = 0.003, Figure 3(d)).
Motor outcome according to the integrity of the corticospinal tract determined by diffusion tensor tractography in the early stage of corona radiata infarct.
Location of the corticospinal tract at the corona radiata in human brain.
When they reach their destination they must first penetrate the corona radiata, before the outer membranes of their heads bind to special receptors in the egg's thick outer covering.
Cranial MRI revealed restricted diffusion in the left corona radiata compatible with acute infarction (Figure 1).
In this case report, a patient with HCHA with T1 hyperintensity in the right basal ganglion and acute infarction in the right corona radiata was presented (5).
Immediately after admission to our hospital (i.e., 13 hours after stroke onset), the patient underwent a cerebral magnetic resonance imaging (MRIFigure 1) showing a small diffusion lesion in the left basal ganglia and corona radiata with a complete perfusion deficit of the left MCA territory and a persistent occlusion of the MCA on magnetic resonance angiography (MRA).
CT scan revealed multiple symmetric intracerebral calcifications in both hemispheres (striatum, thalamus, periventricular white matter, centrum semiovale, corona radiata, and subcortical white matter) and in cerebellum (in dentate nucleus).