What's the difference between cerebellum and metencephalon?
Cerebellum
Definition:
(n.) The large lobe of the hind brain in front of and above the medulla; the little brain. It controls combined muscular action. See Brain.
Example Sentences:
(1) The presence of CR-related activity suggests that SpoV may participate in the CR motor output pathway, and may also provide CR-related information to cerebellum.
(2) No HRP-labeled axons were found in the facial and solitary nuclei and the cerebellum.
(3) Blood flows to contralateral cerebral hemispheric structures were relatively unchanged from prehypoxic values, whereas flows to the brainstem and cerebellum nearly doubled and tripled, respectively.
(4) The cerebellum was almost intact except for a few amyloid plaques.
(5) In general, the cerebellum showed a much delayed developmental pattern with regard to Purkinje cell spine formation.
(6) Incomplete penetrance of the simpler pattern suggests that this genetic locus interacts in a probabilistic manner with epigenetic mechanisms involved in morphogenesis of the cerebellum.
(7) The temporal changes in subunit messenger RNA levels in the cerebellum raise the possibility that synaptogenesis may play a role in receptor gene regulation in this brain region.
(8) Unexpectedly long retention times were noted for the chlorinated solvents, particularly for chloroforn, which showed a specific long-term retention in the cerebellum, meninges and spinal nerves, indicating interactions with specific nervous tissue receptors.
(9) Cells dissociated from 6-day rat cerebellum were seeded on glass coverslips coated with polylysine on one half and hyaluronectin on the other.
(10) Northern blot analyses showed no change in ubiquitin or PGP9.5 gene expression in hippocampus or cerebellum.
(11) Moderately higher GLUT3 mRNA levels were detected in the parietal lobe of the cerebrum, hippocampus, and cerebellum than the levels of GLUT1 transcripts.
(12) In the normal 79-day-old mouse cerebellum, the highest concentration of [3H]muscimol binding sites was observed in the granule cell layer.
(13) Fluorescent labels, injected into either the hindlimb muscles or the cerebellum, are retrogradely transported to motoneurones or dorsal spinocerebellar tract neurones respectively.
(14) The autonomic centers in the brain-stem and cerebellum were systematically affected in both the sporadic and the hereditary cases.
(15) Using an affinity-purified antiserum raised against the p36 heavy chain from bovine adrenal medulla, we have examined the cellular distribution of p36 in developing and adult cerebellum.
(16) Neutral aminopeptidase activity showed a significant decrease in the thalamus and cerebellum with marked (not significant) changes in the hypothalamus, hippocampus, medulla, and occipital cortex.
(17) cerebellum, basal ganglia and hypothalamus, reveal selectivity that fails to conform to conventional descriptions of functional systems.
(18) Tracking a moving target with the index finger defined a network of focal responses of relative cerebral blood flow (relCBF) located in the primary motor cortex, dorsal parietal cortex, precuneate cortex, supplementary motor area (SMA) and ipsilateral anterior cerebellum relative to visual tracking alone.
(19) Naloxone-displaceable binding was observed in all regions of the brain, with a density ranking order of cerebellum greater than telencephalon greater than optic tectum greater than hypothalamus greater than brain stem greater than pituitary gland.
(20) The potency of several selective and non-selective ligands for benzodiazepine receptors for inhibition of the binding of [3H]flunitrazepam was compared in membranes from human or rat brain cerebellum, hippocampus and cerebral cortex.
Metencephalon
Definition:
(n.) The posterior part of the brain, including the medulla; the afterbrain. Sometimes abbreviated to meten.
Example Sentences:
(1) The metencephalon differentiated as a cerebellum in the telencephalon.
(2) Proenkephalin-containing perikarya were located in all major subdivisions of the brain except the metencephalon.
(3) Using an anti-tyrosine hydroxylase antiserum, the whole of catecholaminergic perikarya of the myelencephalon and metencephalon of the sheep were visualized immunocytochemically.
(4) The first histamine-immunoreactive neurons were seen on embryonic day 13 in the border of mesencephalon and metencephalon.
(5) The midbrain itself is required for normal development of the metencephalon.
(6) Brainstems of 14-15 days old rat embryos were removed and the area located between the mesencephalic flexure and the caudal portion of metencephalon was dissected and mechanically dissociated to single cells.
(7) In mammals, cells in the superior rhombic lip and dorsal part of the dorsal lamina of the metencephalon are said to proliferate to form two rounded swellings, the rudiments of the cerebellum.
(8) Rostral mesencephalon and rostral metencephalon have been more easily influenced by environmental factors than their caudal counterparts, suggesting that regions providing instructive positional factors exist within the 2-day-old germinative neuroepithelium.
(9) These results demonstrate that at least some regions of the germinative neuroepithelium from either metencephalon, mesencephalon, and diencephalon are still pluripotent in the 2-day-old avian embryo and that their fate seems to be under the influence of the surrounding structures.
(10) E9.5 brain fragments containing metencephalon and mesencephalon were isolated, explanted on Nucleopore filters and cultured in the absence or presence of antibodies to E-cadherin.
(11) We found that E-cadherin (uvomorulin) is transiently expressed in restricted regions of the metencephalon, mesencephalon and diencephalon of mouse embryonic brain.
(12) The matrix cells in the di-, mes- and metencephalon appeared less or not at all affected by maternal hypoxia.
(13) In some mammals, mast cells were also numerous in the stroma of the telencephalic choroid plexuses (chimpanzee, squirrel monkey), the putamen and the claustrum (chimpanzee), the subfornical organ (pack rat, tiger, chimpanzee), the olfactory peduncles (hooded rat, albino rat), the stroma of the diencephalic choroid plexus (lion, chimpanzee, squirrel monkey), the pineal organ (chimpanzee, squirrel monkey), some nuclei of the hypothalamus (tiger), the infundibulum (hooded rat, tiger, fox) the area postrema (pack rat, chinchilla, lion, spider monkey, chimpanzee, fox) and some nuclei and tracts of the metencephalon and the myelencephalon (tiger).
(14) In both genera, there were numerous 5-HT+ and LENK+ fusiform cells paralleling the ventral surface of the metencephalon and myelencephalon.
(15) High concentrations of total radioactivity were observed by autoradiography in the midbrain and hindbrain (mesencephalon, metencephalon, and myelencephalon) and spinal cord, but not in the forebrain.
(16) Control embryos containing intact notochords expressed Engrailed-2 protein within the neural tube and in a subset of the neural crest and overlying surface ectoderm at the future mesencephalon and cranial metencephalon levels.
(17) At this stage, in the central nervous system, mesencephalic trigeminal neurons are also E1.9 and B30 positive as they migrate to their final location in the rostral metencephalon.
(18) The prosencephalon did not differentiate into the cerebellum when transplanted into the metencephalon, although previous study showed that the prosencephalon has the capacity to differentiate into the optic tectum.
(19) These results suggest that centres above the metencephalon do not exert any tonic effects on the cell bodies of the olivocochlear pathways that result in tonic effects at the cochlea.
(20) In addition, putative A1, A2, A5, A7 (noradrenergic) groups were found in the metencephalon and myelencephalon.