Abstract:
:An unbiased stereological counting device (the fractionator) was used to count Purkinje neurons in mammalian cerebella of known weights in order to define the relationship between weight and number. Nucleoli were chosen as the counting unit and numbers were estimated from uniform random samples of wax-embedded tissue sections. For the cerebella of rat, rabbit, cat, dog, goat, sheep, pig, ox, horse and human, there was a significant linear relationship between log number and log weight. The allometric relationship took the form N = 748,500 x W0.627. The relative bias associated with using nucleoli as counting units was assessed separately on disector pairs of sections and amounted to roughly -5% but varied between species. When the brains of females and males were analysed separately (cat, goat, pig, ox, horse, human), there were no significant differences between the regression lines. These results are consistent with earlier findings. They imply that Purkinje neuron packing densities decrease as brain size increases. Moreover, our preliminary findings appear to indicate that, for any given cerebellar weight, females and males have similar numbers of neurons.
journal_name
J Anatjournal_title
Journal of anatomyauthors
Mwamengele GL,Mayhew TM,Dantzer Vsubject
Has Abstractpub_date
1993-08-01 00:00:00pages
155-60eissn
0021-8782issn
1469-7580journal_volume
183 ( Pt 1)pub_type
杂志文章abstract::Colloidal carbon was injected intravenously into young rats to label circulating monocytes before making a stab wound in the brain. The rats were killed 3-16 days after the stab wound. Demonstration of non-specific esterase, thiamine pyrophosphatase and 5'-nucleotidase was carried out on the carbon-labelled macrophage...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:
更新日期:1987-10-01 00:00:00
abstract::Blind mole-rats (Spalax ehrenbergi) are fossorial solitary rodents that present striking morphological, physiological and behavioural adaptations to the subterranean environment in which they live. Previous studies have shown that mole-rats are specialised in tooth-digging. The rapid eruption-rate of their incisors ha...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1046/j.1469-7580.2001.19950591.x
更新日期:2001-11-01 00:00:00
abstract::Peripheral sensory and autonomic neurons are known to possess insulin receptors. These have been considered to be of the peripheral type, i.e. similar to those of hepatic and fat cells rather than of the brain type which show dual specificity for both insulin and insulin-like growth factor (IGF-1). We have examined th...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1046/j.1469-7580.1997.19130431.x
更新日期:1997-10-01 00:00:00
abstract::Cardiac arrhythmias, notably Wolff-Parkinson-White syndrome, are known to represent a major issue in patients with Ebstein's malformation of the tricuspid valve. Abnormal conducting circuits, however, can also be produced by pathways extending either from the atrioventricular node or the ventricular components of the ...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1111/joa.13179
更新日期:2020-07-01 00:00:00
abstract::Although laryngeal morphology often reflects adaptations for vocalization, the structural consequences of selection for particular aspects of vocal behavior remain poorly understood. In this study, we investigated the effects of increased ultrasonic calling in pups on the adult larynx morphology in selectively bred ra...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1111/joa.13366
更新日期:2021-01-21 00:00:00
abstract::Astyanax brucutu is a peculiar species of Neotropical tetra endemic from the Chapada Diamantina, a large plateau in northeastern Brazil. Individuals of this species undergo a dramatic ontogenetic shift in their diet that is accompanied by equally remarkable changes in their feeding apparatus. Whereas juveniles of A. b...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1111/joa.13280
更新日期:2020-12-01 00:00:00
abstract::We investigated the occurrence and anatomy of the vomeronasal system (VNS) in tadpoles of 13 different anuran species. All of the species possessed a morphologically fully developed VNS with a highly conserved anatomical organisation. We found that a bean-shaped vomeronasal organ (VNO) developed early in the tadpoles,...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1111/j.1469-7580.2012.01543.x
更新日期:2012-10-01 00:00:00
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journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1111/joa.12677
更新日期:2017-12-01 00:00:00
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journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1046/j.1469-7580.2000.19610071.x
更新日期:2000-01-01 00:00:00
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journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1111/joa.12486
更新日期:2016-09-01 00:00:00
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journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1111/j.1469-7580.2009.01065.x
更新日期:2009-05-01 00:00:00
abstract::A study has been made, using light and electron microscopy, of GMG cells in the labyrinthine placenta of the mouse. GMG cells were found lying within the lumina of the maternal blood spaces showed degenerative changes and GMG cells were usually found close to these degenerate trophoblast cells. Sometimes the GMG cells...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:
更新日期:1984-12-01 00:00:00
abstract::Fixed and unfixed human tendons originating from cadavers and postoperation specimens were examined using inclined parallel beams of light in a reflecting mode. Along the tendon, numerous planes, constantly inclined to the axis, were observed edge-on at the surface and within the interior. Their angle of inclination, ...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:
更新日期:1995-06-01 00:00:00
abstract::Trabecular bone microstructural parameters, including trabecular thickness, spacing, and number, have been reported to scale with animal size with negative allometry, whereas bone volume fraction is animal size-invariant in terrestrial mammals. As for the majority of scaling patterns described in animals, its underlyi...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1111/joa.12278
更新日期:2015-03-01 00:00:00
abstract::The straightforward anatomical organisation of the developing and mature rat spinal cord was used to determine and interpret the time of appearance and expression patterns of microtubule-associated proteins (MAP) 1b and 2. Immunoblots revealed the presence of MAP1b and 2 in the early embryonic rat spinal cord and conf...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:
更新日期:1995-12-01 00:00:00
abstract::The effects of excess iodine on the development of the thyroid gland of chick embryos was assessed following injections of potassium iodide prior to incubation. Iodide injection resulted in a significantly greater thyroid gland weight (goitre) on Day 18 of incubation and a delay in hatching. Histological studies of th...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:
更新日期:1991-06-01 00:00:00
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journal_title:Journal of anatomy
pub_type: 杂志文章
doi:
更新日期:1979-10-01 00:00:00
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journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1111/joa.13342
更新日期:2020-10-22 00:00:00
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journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1111/joa.12610
更新日期:2017-07-01 00:00:00
abstract::This study set out to determine the pattern of development and distribution of the interstitial cells of Cajal (ICC) in the intestinal tract of the equine fetus and neonate. Intestinal tissue samples from 12 naturally aborted equine fetuses and three euthanized neonates were collected and fixed in formalin prior to ap...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1111/j.0021-8782.2004.00315.x
更新日期:2004-07-01 00:00:00
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journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1111/j.1469-7580.2005.00467.x
更新日期:2005-10-01 00:00:00
abstract::Muscles are considered to play an important role in the ongoing daily loading of bone, especially in the masticatory apparatus. Currently, there are no measurements describing this role over longer periods of time. We made simultaneous and wireless in vivo recordings of habitual strains of the rabbit mandible and mass...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1111/j.1469-7580.2011.01375.x
更新日期:2011-06-01 00:00:00
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journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1111/joa.12292
更新日期:2015-05-01 00:00:00
abstract::The translocation of mitochondria towards the primitive inner segment of the cones in the tree shrew Tupaia belangeri was investigated by transmission electron microscopy. Throughout ontogeny the migrating mitochondria were codistributed with cytoplasmic microtubules which were preserved after the application of conve...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:
更新日期:1996-10-01 00:00:00
abstract::Alpha (greater than 40 microns) and gamma (less than 30 microns) motoneurons in inspiratory motor nuclei of the thoracic spinal cord of the adult cat were labelled retrogradely by the intramuscular injection of HRP. Small (less than 30 microns) unlabelled neurons within 200-300 microns of labelled motoneurons were ana...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:
更新日期:1988-12-01 00:00:00
abstract::The number of large neurons in the lateral vestibular nucleus of the mouse brain decreases in number after 25 months of age, from 488 at 25 months to 298 at 31 months. The number of small neurons in the nucleus remains constant up to 31 months of age. Large neurons accumulate lipofuscin from 25 months and their mean n...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:
更新日期:1989-10-01 00:00:00
abstract::The histogenesis of the isocortical segment of the lateral telencephalic wall at the coronal level of the interventricular foramen was studied in mice between the ages of E10 and the adult. The proliferative activity of the periventricular germinal layers was correlated with changes in cell distributions in the interm...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:
更新日期:1982-05-01 00:00:00
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journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1046/j.1469-7580.2002.00119.x
更新日期:2002-12-01 00:00:00
abstract::Abstract The skull and the face are directly related, and skeletal morphology influences the facial proportions, muscle structure, feature formation and hence detailed facial appearance. Each face is unique and we are each capable of perceiving very subtle differences between faces in order to carry out personal recog...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1111/j.1469-7580.2008.00972.x
更新日期:2008-11-27 00:00:00
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journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1046/j.1469-7580.2000.19620293.x
更新日期:2000-02-01 00:00:00