Abstract：
:Rodents, together with bats, are among the ecologically most diverse and most speciose groups of mammals. Moreover, rodents show elaborate specializations of the feeding apparatus in response to the predominantly fore-aft movements of the lower jaw. The Laotian rock rat Laonastes aenigmamus was recently discovered and originally thought to belong to a new family. The difficulties in classifying L. aenigmamus based on morphological characters stem from the fact that it presents a mixture of sciurognathous and hystricognathous characteristics, including the morphology of the jaw adductors. The origin of the unusual muscular organization in this species remains, however, unclear. Here, we investigate the development of the masticatory system in Laonastes to better understand the origin of its derived morphology relative to other rodents. Our analyses show that skull and mandible development is characterized by an overall elongation of the snout region. Muscle mass increases with positive allometry during development and growth, and so does the force-generating capacity of the jaw adductor muscles (i.e. physiological cross-sectional area). Whereas fetal crania and musculature are more similar to those of typical rodents, adults diverge in the elongation of the rostral part of the skull and the disproportionate development of the zygomaticomandibularis. Our data suggest a functional signal in the development of the unusual cranial morphology, possibly associated with the folivorous trophic ecology of the species.
journal_name
J Anatjournal_title
Journal of anatomyauthors
Herrel A,Fabre AC,Hugot JP,Keovichit K,Adriaens D,Brabant L,Van Hoorebeke L,Cornette Rdoi
10.1111/j.1469-7580.2012.01519.xsubject
Has Abstractpub_date
2012-08-01 00:00:00pages
128-37issue
2eissn
0021-8782issn
1469-7580journal_volume
221pub_type
杂志文章abstract：:Schwann cells are excluded from the CNS during development by the glial limiting membrane, an area of astrocytic specialisation present at the nerve root transitional zone, and at blood vessels in the neuropil. This barrier, however, can be disrupted and, with the highly migratory nature of Schwann cells, can result i...
journal_title：Journal of anatomy
pub_type： 杂志文章,评审
doi：10.1046/j.1469-7580.1997.19010035.x
更新日期：1997-01-01 00:00:00
abstract：:The sheep is a commonly used animal model for human lumbar spine surgery, but only in vitro investigations comparing the human and ovine spine exist. Spinal musculature has previously not been compared between man and sheep. This additional knowledge could further indicate to what extent these species are biomechanica...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.12354
更新日期：2015-10-01 00:00:00
abstract：:Proper assessment of outcome in clinical trials of neural transplantation requires both biochemical and imaging indices of graft survival, and behavioural and physiological indices of graft function. For transplantation in Huntington's disease, a variety of ligands that are selective for striatal degeneration and graf...
journal_title：Journal of anatomy
pub_type： 杂志文章,评审
doi：10.1046/j.1469-7580.2000.19640597.x
更新日期：2000-05-01 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
abstract：:The present paper reports the results of the first investigation of the semicircular canals in a living, small animal by means of high spatial resolution magnetic resonance imaging. This procedure is noninvasive and allows identification of the endolymphatic and perilymphatic spaces yielding a morphology quite consist...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1992-04-01 00:00:00
abstract：:Excisional wounds were inflicted on the palatal mucoperiosteum of beagle pups at intervals from 3 to 31 days before the animals were killed, when the animals were perfused and the tissue examined by electron, microscopy. Fibroblasts with the morphological characteristics of myofibroblasts, including bundles of intrace...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1980-05-01 00:00:00
abstract：:Quantitative measurements of relative nerve density were achieved using computer-assisted image analysis of immunohistochemically and histochemically defined nerves in the conduction system of the guinea pig heart. All regions of the conduction system possessed a similar density of nerve fibres and fascicles displayin...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1996-04-01 00:00:00
abstract：:This study was prompted by the prospect of transgenic pigs providing donor hearts for transplantation in human recipients. Autonomic innervation is important for the control of cardiac dynamics, especially in the conduction system. Our objective was to assess the relative distribution of autonomic nerves in the pig he...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1046/j.1469-7580.1999.19530341.x
更新日期：1999-10-01 00:00:00
abstract：:The seminal vesicles are the glands of male reproductive organs that produce the fluid and nutrient constituents of semen. It has been believed for a long time that the lumen of a seminal vesicle was a single-coiled tubular structure with irregular diverticula. There are several previous reports on the symmetry, diffe...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.13269
更新日期：2020-12-01 00:00:00
abstract：:The astroglial lineage consists of heterogeneous cells instrumental for normal brain development, function and repair. Unfortunately, this heterogeneity complicates research in the field, which suffers from lack of truly specific and sensitive astroglial markers. Nevertheless, single astroglial markers are often used ...
journal_title：Journal of anatomy
pub_type： 杂志文章,评审
doi：10.1111/joa.12948
更新日期：2019-09-01 00:00:00
abstract：:Injury to the energy-storing superficial digital flexor tendon is common in equine athletes and is age-related. Tenocytes in the superficial digital flexor tendon of adult horses appear to have limited ability to respond adaptively to exercise or prevent the accumulation of strain-induced microdamage. It has been sugg...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/j.1469-7580.2007.00781.x
更新日期：2007-09-01 00:00:00
abstract：:The total numbers of fibres in transverse histological sections of the pterygoid muscles of Lister rats of various ages were counted on enlarged photomicrographic prints. The number in the medial pterygoid of the male doubled between birth and six weeks. This was followed by a decrease of rather more than 10 percent i...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1975-04-01 00:00:00
abstract：:The dentate nucleus is phylogenetically the most recent nucleus in the cerebellum. Owing to its connections to the thalamus and the prefrontal cortex it may be involved in the symptomathology in schizophrenia and other psychiatric illnesses. In this stereological study we implemented the smooth fractionator, which com...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/j.0021-8782.2004.00337.x
更新日期：2004-10-01 00:00:00
abstract：:How changes in anatomy affect joint biomechanics can be studied using musculoskeletal modelling, making it a valuable tool to explore joint function in healthy and pathological joints. However, gathering the anatomical, geometrical and physiological data necessary to create a model can be challenging. Very few integra...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.12877
更新日期：2018-11-01 00:00:00
abstract：:Two or three or sometimes more fine intracavernous branches were traced from the ophthalmic nerve using serial section reconstruction and induced nerve degeneration. They joined the cavernous plexus and were distributed forward with autonomic nerves to the adventitia of the internal carotid artery, emerging from the s...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1987-12-01 00:00:00
abstract：:Retrograde tracers were injected in various parts of the neocortex of the porpoise (Phocoena phocoena). Labelled thalamic neurons were plotted in three-dimensional reconstructions. The lateral geniculate nucleus projects to the visually excitable part of the lateral gyrus. Ventral parts of the medial geniculate nucleu...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1990-04-01 00:00:00
abstract：:Scales of snakes contain hard proteins (beta-keratins), now referred to as keratin-associated beta-proteins. In the present study we report the isolation, sequencing, and expression of a new group of these proteins from snake epidermis, designated cysteine-glycine-proline-rich proteins. One deduced protein from expres...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/j.1469-7580.2009.01192.x
更新日期：2010-03-01 00:00:00
abstract：:The inner thoracic cavity is lined by the parietal pleura, and the lung lobes are covered by the visceral pleura. The parietal and visceral plurae form the pleural cavity that has negative pressure within to enable normal respiration. The lung tissues are bilaterally innervated by vagal and spinal nerves, including se...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.12560
更新日期：2017-02-01 00:00:00
abstract：:The surface area and volume of 79 human fetuses (body weight 8-4080 g) were estimated by use of a geometric method. It was found that body surface area increased by a factor of about 70, and body volume by a factor of about 400, during the fetal period. Surface area (S, in cm2) was related to body weight (W, in g) and...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1983-09-01 00:00:00
abstract：:Apoptosis is an essential physiological process in embryonic development. In the developing eye of vertebrates, three periods of developmental apoptosis can be distinguished: early, intermediate and later. Within the apoptosis pathway, caspases play a crucial role. It has also been shown that HSP110 may have a potenti...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/j.1469-7580.2007.00719.x
更新日期：2007-05-01 00:00:00
abstract：:The blood supply to the cranial venae cavae on both sides and to the heart was studied macroscopically in 40 adult laboratory shrews (Suncus murinus) of both sexes injected either with Neoprene latex into the abdominal aorta (25 animals) or with Mercox into the left ventricle (15 animals). The 1st branch of the left s...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1993-12-01 00:00:00
abstract：:The mitotic response to wounding was examined in ulcers resulting from the excision of small pieces of rectal mucous membrane in two groups of guinea-pigs. One group was wounded at 09.00 hours and a second group at 21.00 hours. Mitotic counts were carried out in the glandular epithelium at the ulcer edges at 2 hourly ...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1978-02-01 00:00:00
abstract：:The fabella is a sesamoid bone located in the gastrocnemius behind the lateral femoral condyle. In humans, fabellae are 3.5 times more common today than they were 100 years ago, with prevalence rates varying between and within populations. In particular, fabellae have been assumed to be more common in Asians than non-...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.13091
更新日期：2020-02-01 00:00:00
abstract：:The fossil record supports the conclusions derived from the study of extant species that the Primates evolved a unique suite of characters in the articulations of the foot. The tarsal bones of African Miocene apes show specializations characteristic of hominoid evolution and provide reasonable precursors for the morph...
journal_title：Journal of anatomy
pub_type： 历史文章,杂志文章
doi：
更新日期：1980-09-01 00:00:00
abstract：:The frequency with which the gonadal arteries follow a recurrent course, upwards and arching over the renal veins before descending to the gonads, is recorded for the South African Negro. The gonadal arteries follow such a course on the left side in 17, 2% and on the right side in 22% of cases. This incidence for arch...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1981-05-01 00:00:00
abstract：:The primary aim of this study is to broadly evaluate the relationship between cursoriality (i.e. anatomical and physiological specialization for running) and limb bone morphology in lagomorphs. Relative to most previous studies of cursoriality, our focus on a size-restricted, taxonomically narrow group of mammals perm...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1111/joa.12220
更新日期：2014-10-01 00:00:00
abstract：:An ultrastructural study was undertaken on cartilage resorption at the site of initial endochondral bone formation in the mouse mandibular condyle on d 16 of pregnancy. After resorbing the bone collar, the osteoclasts extended their cell processes into the cartilage matrix and made contact with hypertrophic chondrocyt...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：10.1046/j.1469-7580.1997.19110065.x
更新日期：1997-07-01 00:00:00
abstract：:The occurrence of pneumatisation in the skull of the adult domestic fowl was investigated in eight birds by gross and histological examination. It was found to occur regularly throughout the neurocranium and in the quadrate and variably in the mandible, but to be absent in the facial skeleton. Close agreement was foun...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1984-06-01 00:00:00
abstract：:The relationship between lung liquid flow and fetal lung development has been studied at the cellular level using ultrastructural techniques. Continuous in utero tracheal ligation and drainage (over a period of 21-28 days) both result in malformations of the developing fetal lamb lung. Ligated lungs are larger, and dr...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1977-07-01 00:00:00
abstract：:The common internal iliac artery in the sheep gives rise to the arteries which are the primary source of blood to the uterus. We have used a vascular occluder placed on the common internal iliac artery of the pregnant sheep to induce and study the effects of chronic fetal hypoxaemia. We have noted that uterine blood f...
journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1995-08-01 00:00:00
