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A Morphological Study of the Dorsum Sellae in Human Skull International Journal of Morphology
Haider,Syed Javed; Rezigalla,Assad Ali; Abdalla,Asim Mohammed.
Anatomical variations in the shape and dimension of the dorsum sellae and posterior clinoid process are common. Most textbooks describe its shape as a median rectangular plate, a square plate, or a transverse ledge on a slope behind the sella turcica (hypophyseal fossa). This work aims to study the dorsum sellae of human skull. One hundred and twenty five dried adult human skulls, irrespective of age, were used for the study. Detailed features of the dorsum sellae were noted and classified into five types: crest like, thin plate, frail quadrilateral plate, heavy square plate, thick elongated plate. Fusion of the posterior and middle clinoid processes in one (unilateral) and all the clinoid processes (anterior, middle, and posterior) in three skulls...
Tipo: Journal article Palavras-chave: Dorsum sellae; Clinoid process; Anatomical variations; Skull.
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022016000400001
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A Morphometric Study on the Skull of Donkey (Equus asinus) International Journal of Morphology
Zhu,Lei; Shi,XiaoDong; Wang,JunJie; Chen,JianGang.
The present study was carried out on a number of 16 skulls of adult male domestic donkeys. Craniometric measurements for 40 different parts of the skulls were made. All investigated features were expressed as Mean±SD. Cephalic indices and ratios were calculated by using the investigated features. The craniometric measurements and cephalic indices had been compared with those of local horses and ponies. A skull length of 443.07±53.57 mm and a maximum zygomatic width of 169.09±17.64 mm were obtained. The size of donkey skull was between those of local horses and ponies. A skull index of 38.23±0.85, a cranial index of 45.01±2.83 and a facial index of 67.80±3.79 were obtained. Cranial index and skull index were found to be close in value to that of local...
Tipo: Journal article Palavras-chave: Skull; Donkey; Craniometry.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000400030
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Age Effect in the Morphological Traits Performance for Sex Determination in Human Skulls and Mandibles International Journal of Morphology
Suazo Galdames,Iván; Zavando,Daniela.
In this study we tested the hypothesis that diagnostic performance of the morphological indicators for sexual dimorphism are reduced as they are applied in skull and mandibles of older subjects. We used 275 adult human skulls, 250 of these with mandible, all subjects with sex and age registry. Sixteen classic morphological indicators of sexual dimorphism were evaluated, this information was compared with the registry and results noted in terms of precision. The best general performance of morphological indicators of sexual dimorphism were recorded in the 31 - 40 and 61 - 70 years, age range groups. Lowest precision ws recorded in the group corresponding to subjects between 21 ­ 30 years. Our results do not support the proposed hypothesis and suggest a...
Tipo: Journal article Palavras-chave: Sexual dimorphism; Sex determination; Aging; Age; Skull.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000100053
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An Attempt to Determine the Size of Biometric Differences in the Skull of Two Colour Variants of American Mink (Neovison vison) International Journal of Morphology
Baranowski,Piotr; Pezinska-Kijak,Katarzyna; Felska-Blaszczyk,Lidia; Zuk,Krzysztof; Nowak,Piotr; Kosecka,Joanna; Oczeretko,Kamila; Chukwu,Peter; Mazur,Pawel.
This study aimed at answering the question whether production of new colour variants of American mink in mink farms using mutations may entail changes in skull morphology and relationships between the bone elements building it. Analyses were made on the skulls of 56 eight-month-old males and females of two American mink colour variants (standard Brown and mutant Sapphire) from the same farm. Mean values, standard deviations and coefficients of variation were determined for carcass weight, cranial and mandibular weights and 7 dorsal surface, 8 lateral surface and 11 basal surface traits of the skull. The values of 24 cranial and mandibular indices and the values of sexual size dimorphism (SSD), i.e. a coefficient describing differences between sexes, were...
Tipo: Journal article Palavras-chave: Biometry; Neovison vison; Viscerocranium; Neurocranium; Skull.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000300024
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Analysis of Bone Variations of the Occipital Bone in Man International Journal of Morphology
da Mata,João Roberto; da Mata,Fabiana Ribe; Aversi-Ferreira,Tales Alexandre.
Inadequate ossification of the interparietal region induces the appearance of interparietal and wormian bones, also associated with genetic factors. The formation of the interparietal bone depends on the separation of the intermediate segment from the lateral plate by the transverse occipital suture, which means that this bone is formed by the medial and lateral plates. Wormian interparietal bones or epactal bones are located within the interparietal region, being single or multiple, and are located in the upper central region of the interparietal region, the sutural bones, however, are formed from additional ossification centers that can occur in near sutures. The aim of this work was to macroscopically evaluated the presence of changes in the structure...
Tipo: Journal article Palavras-chave: Skull; Human; Interparietal bone; Sutural bone.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000100035
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Anatomic Variants of Foramen Ovale and Spinosum in Human Skulls International Journal of Morphology
Khan,Aaijaz Ahmed; Asari,Mohd Asnizam; Hassan,Asma.
Foramen ovale and spinosum are important foramina of the greater wing of the sphenoid. Normal variations in their shapes and sizes are quite common and widely studied. In the present study, conducted in the Department of Anatomy of School of Medical Sciences, Universiti Sains Malaysia, 25 dried human skulls were examined for anatomic variations of the foramina of the greater wing of the sphenoid. During the study, we noticed anatomic variations of the foramen ovale and spinosum. In one skull, there was an abnormally large and irregular foramen ovale which was confluent with the foramen spinosum. In the second skull, the foramen spinosum was absent on the left side and in the 3rd skull it was duplicated on the right side. These variations are very rare and...
Tipo: Journal article Palavras-chave: Variation; Skull; Foramen; Sphenoid; Foramen ovale; Foramen spinosum.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000200015
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Asymmetry of Human Skull Base During Growth International Journal of Morphology
Russo,Priscilla Perez; Smith,Ricardo Luiz.
Knowledge about human skull asymmetry in normal dry specimens is useful as a parameter for medical and dentistry practice. Skull base was investigated with the objective to validate the method of indirect measurement with digital pictures and to evaluate the degree of asymmetry from human skull base in different ages. We analyzed 176 normal identified human skulls, divided by age in the following groups: Fetuses, newborn, children and adults. Measures were taken from a central point: pharyngeal tubercle and 4 lateral points: foramen ovale, foramen spinosum, carotid canal and stylomastoid foramen using digital biometry after a comparative validation with directed method performed with caliper. Results were presented as asymmetry indexes and data were...
Tipo: Journal article Palavras-chave: Anatomy; Asymmetry; Growth; Skull.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022011000300062
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Biomechanics of the Human Canine Pillar Based on its Geometry Using Finite Element Analysis International Journal of Morphology
Freire,Alexandre Rodrigues; Prado,Felippe Bevilacqua; Rossi,Ana Cláudia; Noritomi,Pedro Yoshito; Neto,Francisco Haiter; Caria,Paulo Henrique Ferreira.
This study evaluated the stress distribution based on the canine pillar geometry in human skull, using a finite element analysis. Computed tomography of human skull was used to build a finite element model, which was composed by all bony structures of canine pillar: canine eminence, canine fossa, frontal process of maxilla, glabellum and superciliary arch. A support on the bite contact of maxillary canine tooth and a resultant force of the masticatory muscles was applied in the simulation. Equivalent Von-mises and maximum principal stresses were analyzed along the structures that compose the canine pillar geometry. Von-mises stress presented high stress concentrated at the canine fossa and frontal process of maxilla. Maximum principal stress showed...
Tipo: Journal article Palavras-chave: Skull; Biomechanics; Finite element analysis.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000100036
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Biometry of the Skull of Wild and Farm Long-tailed Chinchilla (Chinchilla laniger, Molina, 1782) International Journal of Morphology
Baranowski,Piotr; Wróblewska,Magdalena; Nowak,Piotr; Pezinska,Katarzyna.
This study aimed at presenting the values of 47 metric traits and 20 cranial indices of the skull of 291 mature farm chinchillas and comparing these data with those being determined on 32 chinchilla skull specimens from the Natural History Museum in London. Measurements of the viscerocranium, neurocranium and mandible parameters were taken. No normal distribution of these traits was observed. The values of selected Spearman's rank correlation coefficients were calculated. It was found that most cranial traits of the farm chinchillas showed statistically significantly higher values (P0.01) when compared to those being determined on the skulls of museum specimens. The effect of the farm environment, in which the farm chinchillas had been kept for many...
Tipo: Journal article Palavras-chave: Biometry; Chinchilla; Viscerocranium; Neurocranium; Skull.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000300038
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Caudofrontal Depression on the Cornual End of the Temporal Line of the Skull of Goat Breeds in Nigeria International Journal of Morphology
Olopade,James Olukayode; Onwuka,Silas Kalu; Kwari,Hyelduku Danladi; Oke,Bankole Olusiji.
A comparative study of skull types was done using 65 skulls obtained from three different goat breeds in Nigeria namely; Red Sokoto, Sahel and West African Dwarf. A unique depression was consistently found at the cornual end of the temporal line of the skull medial to the middle portion of the caudal boundary of the orbit and dorsal to the lateral portion of the parietofrontal suture. The depression was found in all the breeds studied, and in both sexes on the lateral sides of both cornual processes of the frontal bones. The features (depth, height and width) of the depression were found to vary without regard to either sex or breed. A search of the literature did not yield any information on this depression in the skull of the goat. Consequently, we...
Tipo: Journal article Palavras-chave: Skull; Goat breds; Caudofrontal depression.
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000400009
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Chronic skull osteomyelitis due to Cryptococcus neoformans: first case report in an HIV-infected patient BJID
Adiwardana,Natanael Sutikno; Morás,Juliana de Angelo; Bernardo,Leandro Lombo; Klautau,Giselle Burlamaqui; Queiroz,Wladimir; Vidal,Jose Ernesto.
ABSTRACT Osteomyelitis due to Cryptococcus neoformans are described in mostly 10% of patients with disseminated cryptococcosis, being direct inoculation even more uncommon. We report the case of an HIV-infected patient with history of recurring itching on his scalp and repetitive local trauma. For eighteen months, he noticed a painful and slow growing lump on his scalp. He was submitted to an excisional biopsy of the lesion but no etiological diagnosis was identified. After this procedure, the post-surgical wound never completely healed. At admission, the patient presented nausea and headache for three days and an open orifice into his skull. Investigations confirmed meningitis and skull osteomyelitis caused by Cryptococcus neoformans. He was treated with...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Cryptococcus neoformans; Osteomyelitis; Skull; HIV.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702018000600499
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Comparative Study of Cranial Capacity of the Non-tribal with Korku Tribal Population of Madhya Pradesh, India International Journal of Morphology
Gohiya,Vineet Kumar; Shrivatava,Sudha; Gohiya,Sarita.
Knowledge of cranial capacity is useful in differentiation of racial and sexual differences, which indirectly reflects the brain volume in different populations. Most of these studies have been done on the dry skulls using linear dimensions. Only few studies have been done on living subjects. The aim of this study was to compare cranial capacity of particular age group of Korku tribe & Non-tribal population of Madhya Pradesh a state of India. This study was carried on 800 healthy volunteer of 20 - 25 year-old age group (in which each 400 males and females) in Korku tribe and Non-tribal population of Madhya Pradesh state of India, by using linear dimensions of head (Lee Pearson's formula). The mean cranial capacity and SD in Non-tribal males and...
Tipo: Journal article Palavras-chave: Anthropometry; Cranial capacity; Skull; Sex; Tribe.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000100047
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CRANIAL OSTEOLOGY OF CYCLARHIS GUJANENSIS (AVES: VIREONIDAE) Pap. Avulsos de Zool. (São Paulo)
PREVIATTO,DIEGO MATIUSSI; POSSO,SÉRGIO ROBERTO.
The small passerine Cyclaris gujanensis can tear into small pieces large or heavy-bodied preys that could not be swallowed whole such as frogs, snakes, bats and birds. However there are few studies on the cranial anatomy of this species. Thus, we focused on the description of the cranial osteology to contribute to the anatomical knowledge of this species and to make some assumptions about functional anatomy. The fossa temporalis is shallow but broad and the fossa of os palatinum is deepened. The os quadratum processes are long and thick. The os pterygoideum is enlarged and the upper jaw is strongly inclined ventrally (140°) with reference to the skull. The rostral extremity of rhamphotheca is hooked with ventral concavity to fit the mandible (pincer form)....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rufous-browed Peppershrike; Skull; Osteology; Anatomy..
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492015001800255
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Cranial Osteology of the Armadillo Chaetophractus villosus (Mammalia, Xenarthra, Dasypodidae) International Journal of Morphology
Squarcia,Silvia Margarita; Sidorkewicj,Nora Silvia; Casanave,Emma Beatriz.
The morphology and morphometry of the cranial bones of Chaetophractus villosus were studied. The skull components are morphologically similar between adults of both sexes, and follow the generalized pattern for most of described dasypodids. The morphometric analysis, however, demonstrated that the bones lying in the rostrocaudal plane are mostly longest in females, determining higher values of the total, basal and condilobasal lengths of the skull, which are the main variables that contribute to a sexual dimorphism in this species
Tipo: Journal article Palavras-chave: Dasypodidae; Morphology; Osteology; Skull; Sexual dimorphism.
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000500004
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Craniometric Characteristics and Cranial Indices of Polish Heath Sheep Rams ­ Extended Data International Journal of Morphology
Baranowski,Piotr.
The study was conducted on the mouflon-derived horned sheep of the preserved Polish Heath Sheep breed. In this study, basic skull measurements of 24 skulls of the rams of different age: 1 day, 90 days, 210 days, 270 days, 3 and 6 years, were analyzed. The weight of each skull was determined, as well as 43 craniometric characteristics were measured, and cranial cavity volume and viscerocranial and neurocranial indices were calculated. From birth to the age of 6 years, the greatest length of the skull, the condylobasal length and the length of the cheek-tooth row increased two-fold. To day 210 of age, the bony housing for eyeball and its organs grew intensively. To day 270 of age, the largest increase was characteristic of the elements of the angular length...
Tipo: Journal article Palavras-chave: Skull; Neurocranium and viscerocranium measurements; Polish Heath Sheep; Endangered breeds.
Ano: 2017 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000100022
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Craniometrical Studies on the Skull of Tibetan Gazelle (Procapra Picticaudata) International Journal of Morphology
Zhu,Lei.
A total of 10 skulls of Tibetan gazelle were utilized in this study. Craniometric measurements for 22 different parts of the skull were made. Skull indices and ratios were calculated. A skull index of 43.22±0.44, a cranial index of 58.37±0.80 and a facial index of 116.37±1.24 were obtained.
Tipo: Journal article Palavras-chave: Craniometry; Skull; Procapra Picticaudata.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000100035
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Descripción del sincraneo de Ameiva Ameiva (Linnaeus) (Squamata, Teiidae) Zoologia
Tedesco,María Esther; Krause,Ligia; Alvarez,Blanca Beatríz.
An osteological description of the syncranium and hyoid apparatus of Ameiva ameiva (Linnaeus, 1758) is presented. By comparison between males and females signiflcant intersexual differences were found in relation to: skull size, frontal, parietal and basisphenoid bones, interpterygoid opening and teeth number and mor-phology. Absence of pterygoid teeth in A. ameiva is verified out. The specimens used for this study carne from Chaco and Formosa provinces (Argentina).
Tipo: Info:eu-repo/semantics/article Palavras-chave: Squamata; Teiidae; Ameiva ameiva; Neotropical región; Skull.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000400013
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Divided infraorbital foramen in the lion (Panthera leo): its implications for colonisation history, population bottlenecks, and conservation of the Asian lion (P. l. persica) Naturalis
Yamaguchi, N.; Kitchener, A.C.; Driscoll, C.A.; Macdonald, D.W..
A divided infraorbital foramen is an important morphological feature in lion taxonomy and has previously been considered to occur only in the Asian lion, Panthera leo persica. Based on an examination of 498 lion skulls from museum collections in Europe and southern Africa, we report for the first time on the prevalence of the divided infraorbital foramen in African lions, as well as its occurrence in the tiger, P. tigris and the extinct Pleistocene European cave lion, P. leo spelaea. The higher frequency of this characteristic in Asian lions may have occurred after the lion colonised Asia, and can be considered an important morphological feature characterising this population. It is not clear whether recent anthropogenic population bottlenecks have...
Tipo: Article / Letter to the editor Palavras-chave: Cave lion; Gujarat; India; Skull; Spelaea; Tiger; 42.84.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/314192
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Estimation of Cranial Capacity in 20­25 Year Old Population of Madhya Pradesh, a State of India International Journal of Morphology
Gohiya,Vineet Kumar; Shrivatava,Sudha; Gohiya,Sarita.
It is known that there exists close relationship between cranial capacity and size of the brain. Several studies have estimated the cranial capacity, which indirectly reflects the brain volume in different populations. The aim of this study was to estimate cranial capacity of a particular age group of population of Madhya Pradesh. This study was carried out on 400 healthy 20-25 year old (200 male and 200 female) individuals of Madhya Pradesh state of India, by using linear dimensions of head (Lee Pearson's formula). The mean cranial capacity and SD in males &amp; females were 1380.52±94.63 cc and 1188.75±91.16 cc respectively. This study has shown a significant (p<0.05) difference between male and female population, being higher in males than in...
Tipo: Journal article Palavras-chave: Anthropometry; Cranial; Capacity; Skull; Sex.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000400035
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Geographic variation in Caluromys derbianus and Caluromys lanatus (Didelphimorphia: Didelphidae) Rev. Bras. Zool.
Fonseca,Raul; Astúa,Diego.
We analyzed the geographic variations in the shape and size of the cranium and mandible of two woolly opossums, Caluromys derbianus and Caluromys lanatus. Using geometric morphometrics we analyzed 202 specimens of C. derbianus and 123 specimens of C. lanatus, grouped in 7 and 9 populations, respectively. We found sexual dimorphism in shape variables only in the dorsal view of the cranium of Caluromys derbianus, which is not associated with geographical origin. We detected geographic variation in the size of the mandible in two populations (Nicaragua and Northern Panama), but no geographic variation in shape. The size of the cranium of C. lanatus varies significantly, with clinal variation in peri-Amazon populations, with a break between two populations,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Caluromyinae; Geometric morphometrics; Marsupial; Neotropics; Skull; Size and shape analysis.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000200109
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