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Anatomical Science International

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https://www.readbyqxmd.com/read/28770548/macroscopic-anatomical-study-of-the-distribution-of-the-cranial-mesenteric-artery-to-the-intestine-in-the-rabbit
#1
Tetsuhito Kigata, Reona Ikegami, Hideshi Shibata
Intestinal surgery is commonly performed to cure bowel obstruction in rabbits, but detailed descriptions of the arterial supply to the intestine are incomplete. We investigated anatomical variations of the distribution of the cranial mesenteric artery to the intestine in 33 New Zealand White rabbits by injecting colored latex into the arteries. The cranial mesenteric artery arose independently from the abdominal aorta at about 2.0 cm caudal to the celiac artery and branched off the pancreaticoduodenal, middle colic, ileocecocolic, jejunal and ileal arteries...
August 2, 2017: Anatomical Science International
https://www.readbyqxmd.com/read/28770547/analysis-of-dural-sac-thickness-in-the-human-cervical-spine
#2
Soonwook Kwon, Seung-Woo Suh, Dasom Kim, Im Joo Rhyu, Hyunung Yu, Seung Woo Han, Jae-Young Hong
The thickness of the dura mater in the human cervical spine can vary between individuals and by vertebral level; these differences can result in various clinical outcomes. The purpose was to measure and analyze cervical dura mater thickness. Microscopic measurements were made of tissue from human cadavers. The subjects were nine human cadavers with no previous history of spinal deformity or surgery. Fourteen segments of both anterior and posterior dura mater from the C1 to C7 cervical vertebrae were obtained...
August 2, 2017: Anatomical Science International
https://www.readbyqxmd.com/read/28741222/network-of-anatomical-texts-nanatex-an-open-source-project-for-visualizing-the-interaction-between-anatomical-terms
#3
Ryusuke Momota, Aiji Ohtsuka
Anatomy is the science and art of understanding the structure of the body and its components in relation to the functions of the whole-body system. Medicine is based on a deep understanding of anatomy, but quite a few introductory-level learners are overwhelmed by the sheer amount of anatomical terminology that must be understood, so they regard anatomy as a dull and dense subject. To help them learn anatomical terms in a more contextual way, we started a new open-source project, the Network of Anatomical Texts (NAnaTex), which visualizes relationships of body components by integrating text-based anatomical information using Cytoscape, a network visualization software platform...
July 24, 2017: Anatomical Science International
https://www.readbyqxmd.com/read/28707222/considering-the-inferior-surface-area-of-lower-lumbar-vertebrae-determining-weight-transmission-pattern-at-the-lumbosacral-junction
#4
Uchenna Kenneth Ezemagu, Chike P Anibeze, Chinedu F Akpuaka
The biomechanical function of the lumbosacral junction (LSJ) is obscure, but its medical significance is not, as it is the most common site of low back pain. In this study, we analyzed the difference between the mean values of the surface areas of the inferior body and total inferior facet areas of the fourth and fifth lumbar vertebrae. We aimed to define the function of the LSJ during weight transmission and clarify its mechanical significance. Vertebral columns of 45 adult male human cadavers from five anatomy departments in Nigeria were cut at the L3-L4 intervertebral disc and macerated...
July 13, 2017: Anatomical Science International
https://www.readbyqxmd.com/read/28685367/rare-muscular-variations-identified-in-a-single-cadaveric-upper-limb-a-four-headed-biceps-brachii-and-muscular-elevator-of-the-latissimus-dorsi-tendon
#5
Colin W Moore, Charles L Rice
Supernumerary or accessory heads of the biceps brachii are persistent muscular structures which can vary in number and location in the arm. Variations in other arm muscles, such as the coracobrachialis, can accompany supernumerary biceps brachii musculature in the upper limb. In this case report, we describe two rare muscular variants in a single adult male: a four-headed biceps brachii and the muscular elevator of the latissimus dorsi tendon. Additionally, accessory muscles of the brachialis and flexor digiti minimi brevis were identified in the upper limb...
July 6, 2017: Anatomical Science International
https://www.readbyqxmd.com/read/28660558/morphometric-changes-in-the-spinal-cord-during-prenatal-life-a-stereological-study-in-sheep
#6
Javad Sadeghinezhad, Narges Zadsar, Beal Hasanzadeh
This study describes the volumetric changes in the spinal cord during prenatal life in sheep using quantitative stereological methods. Twenty healthy sheep fetuses were included in the present study, divided into four groups representing 9-11, 12-14, 15-17, and 18-20 weeks of gestation. In each group, the spinal cord was dissected out and sampled according to the unbiased systematic random sampling method then used for stereological estimations. The total volume of spinal cord, volume of gray matter (GM), volume of white matter (WM), ratio of GM volume to WM volume, and volume of central canal (CC) were estimated in the whole spinal cord and its various regions using Cavalieri's principle...
June 28, 2017: Anatomical Science International
https://www.readbyqxmd.com/read/28620863/effect-of-ligamentum-teres-tear-on-the-development-of-joint-instability-and-articular-cartilage-damage-an-in-vivo-rabbit-study
#7
Jong Hun Baek, Young Soo Chun, Kee Hyung Rhyu, Wan Keun Yoon, Yoon Je Cho
The contribution of the ligamentum teres to the stabilization of the hip joint and the clinical influence of a compromised ligamentum teres are not well known. This study aimed to investigate joint stability and cartilage damage in a rabbit model by surgically inducing a complete ligamentum teres tear. Twenty adult New Zealand rabbits were used in this study. Rabbits were divided into complete ligamentum teres tear with capsulotomy (n = 9, group I) and capsulotomy only (n = 10, group II) groups. Unilateral surgery was performed on the left hip...
June 15, 2017: Anatomical Science International
https://www.readbyqxmd.com/read/28555289/association-of-high-carotid-bifurcation-and-thyrolinguofacial-trunk-a-rare-variation
#8
Suresh Narayanan, Senthil Murugan
Variations in the origins and the branching pattern of the carotid system of arteries are not uncommon. Here we report a rare case of higher bifurcation of the common carotid artery (CCA) (at the level of the greater cornu of the hyoid bone), thyrolinguofacial trunk (TLFT) originating from the CCA, superior laryngeal artery (SLA) arising from the external carotid artery (ECA) on the left side, and linguofacial trunk arising from the ECA on the right side. In the present case, the CCA and carotid bifurcation may have arisen from the second aortic arch...
May 29, 2017: Anatomical Science International
https://www.readbyqxmd.com/read/27393150/mathematical-modelling-of-the-growth-of-human-fetus-anatomical-structures
#9
Krzysztof Dudek, Wojciech Kędzia, Emilia Kędzia, Alicja Kędzia, Wojciech Derkowski
The goal of this study was to present a procedure that would enable mathematical analysis of the increase of linear sizes of human anatomical structures, estimate mathematical model parameters and evaluate their adequacy. Section material consisted of 67 foetuses-rectus abdominis muscle and 75 foetuses- biceps femoris muscle. The following methods were incorporated to the study: preparation and anthropologic methods, image digital acquisition, Image J computer system measurements and statistical analysis method...
September 2017: Anatomical Science International
https://www.readbyqxmd.com/read/27094162/clinical-relevance-of-conus-medullaris-and-dural-sac-termination-level-with-special-reference-to-sacral-hiatus-apex-anatomical-and-mri-radiologic-study
#10
Ashraf Youssef Nasr
The aim of this study was to determine the vertebral level and variations in the position of the termination of both conus medullaris (CMT) and dural sac (DST) with special reference to the apex of the sacral hiatus (SHA) using magnetic resonance (MR) images and human cadavers. Different measurements were made on 200 MR sagittal T1- and T2-weighted lumbosacral images and 60 formalin-fixed adult human cadavers. The linear distances between the CMT, DST and SHA, the anteroposterior diameter at SHA, delete length and thickness of the sacrococcygeal membrane were also measured...
September 2017: Anatomical Science International
https://www.readbyqxmd.com/read/27084365/differences-in-osteon-structure-histomorphometry-between-puppyhood-and-adult-stages-in-the-golden-retriever
#11
Korakot Nganvongpanit, Waranee Pradit, Tanita Pitakarnnop, Manussabhorn Phatsara, Siriwadee Chomdej
Osteon structure has been widely studied in mammals, but osteon structure in dogs has received relatively little attention, especially in terms of whether aging has any effect on osteon structure. The aim of this study was to compare the osteon structure of both flat (scapula and os coxae) and long bones (humerus, radius, ulna, metacarpus, femur and tibia) of male puppy and adult Golden Retrievers. We examined five parameters: Haversian canal diameter, Haversian canal area, osteon diameter, osteon area, and number of lacunae per osteon...
September 2017: Anatomical Science International
https://www.readbyqxmd.com/read/27067228/histological-and-radiographic-study-of-human-edentulous-and-dentulous-maxilla
#12
Yukino Kamigaki, Iwao Sato, Takashi Yosue
Data on the bone trabecular structure and density of the edentulous regions of the first upper molars are important for designing successful dental treatments, especially dental implants. However, no detailed defined morphometric properties on the human maxilla are available at the immunohistochemical and radiographic levels. Cone-beam computed tomography analysis and immunohistochemical observation were applied to the maxillary first molar region of 91 cadavers (46 males and 45 females). The edentulous maxilla can be classified into the following three forms: fully edentulous (FE), partially edentulous (PE), and immediately edentulous (IE)...
September 2017: Anatomical Science International
https://www.readbyqxmd.com/read/28185148/simultaneous-lateral-ponticle-with-facet-like-depression-and-epitransverse-process-of-the-atlas
#13
Jocelyn Gonzales, Vlad Voin, Joe Iwanaga, Cameron Schmidt, Christian Fisahn, Fernando Alonso, Rod J Oskouian, R Shane Tubbs
The lateral ponticle and epitransverse process are rare anatomical variations found on the atlas vertebra of the cervical spine. When a lateral ponticle occurs, an abnormal bony bridge extends from the superior articular facet to the transverse process. This bony bridge bisects the transverse foramen wherein the vertebral artery normally lies. In this case report, we describe a C1 specimen from an adult male with a lateral ponticle on the right side and an epitransverse process on the left side. Additionally, an articular facet-like structure was also found on the lateral ponticle's surface...
June 2017: Anatomical Science International
https://www.readbyqxmd.com/read/27987116/roles-of-pkr-in-differentiation-and-apoptosis-of-bone-related-cells
#14
REVIEW
Tatsuji Haneji
Double-stranded RNA-dependent protein kinase (PKR) is a serine/threonine protein kinase which is activated by double-stranded RNAs and related to several signal transduction pathways. To examine the effects of PKR on bone metabolism, we established PKR-K/R mutant cells in which amino acid lysine at 296 is substituted with arginine. PKR regulated apoptosis in osteoblastic cells via nuclear factor kappa-B (NF-κB) cascade. MC3T3-E1 cells cultured with osteoblast differentiation medium differentiated into osteoblasts, while the mutant cells did not differentiate into osteoblasts...
June 2017: Anatomical Science International
https://www.readbyqxmd.com/read/27629485/giovanni-battista-morgagni-1682-1771-father-of-pathologic-anatomy-and-pioneer-of-modern-medicine
#15
REVIEW
Sanjib Kumar Ghosh
Giovanni Battista Morgagni (1682-1771) was an Italian anatomist who introduced the anatomo-clinical concept in medicine and established anatomy as the instrument to identify the seat and etiology of any disease. He was professor of anatomy at the prestigious University of Padua for more than 50 years. His first documented text in anatomy, Adversaria Anatomica was published in three volumes between 1706 and 1719. His accurate anatomical descriptions of human organs enhanced his reputation as the most famous anatomist of Europe during that period...
June 2017: Anatomical Science International
https://www.readbyqxmd.com/read/27084364/morphological-features-of-the-tongue-and-laryngeal-entrance-in-two-predatory-birds-with-similar-feeding-preferences-common-kestrel-falco-tinnunculus-and-hume-s-tawny-owl-strix-butleri
#16
Mohamed M A Abumandour, Neveen E R El-Bakary
The aim of this investigation was to describe the morphological characters of the tongue of two predatory birds with similar feeding preferences, i.e. the common kestrel and Hume's tawny owl. Descriptive information on the lingual morphology of these two birds, particularly Hume's tawny owl, is incomplete. We found that the lingual apex of the owl has an oval, concave, shovel-like form with a bifid lingual tip, while that of the kestrel has the shape of a horny tip-like spoon with a central process in addition to there being several filiform-like papillae on the dorsal surface of the apex and body...
June 2017: Anatomical Science International
https://www.readbyqxmd.com/read/27041095/age-related-fibromuscular-dysplasia-in-the-human-left-ventricle-papillary-muscles-arteries
#17
Christos E Nerantzis, Nikolaos G Karakoukis, George C Di Lernia, Sotirios G Bouzianis, Nikolaos G Sakelaris, Emmanouil B Agapitos
We describe histologically cases of patients between 31 and 60 years of age who had fibromuscular dysplasia (FMD) in the tunica media (TM) of the left ventricle papillary muscles (PM) arteries. We also compared them with our previous findings in subjects younger than 30 years of age. We examined histologically samples taken from the tip of the anterior PM of the left ventricle in 200 healthy male hearts. In 33 cases (16.5 %), FMD was in the TM. We divided these cases into three subgroups (A, B, C) based on the degree of replacement of smooth muscle cells by fibrous tissue, and thus identified 17, 11 and 5 cases, respectively...
June 2017: Anatomical Science International
https://www.readbyqxmd.com/read/27038026/an-anatomical-study-of-wormian-bones-from-the-eastern-part-of-india-is-genetic-influence-a-primary-determinant-of-their-morphogenesis
#18
Sanjib Kumar Ghosh, Sudipa Biswas, Suranjali Sharma, Soumya Chakraborty
Over the years a number of investigators have analysed the morphology of wormian bones in different population groups across the world. There have been significant variations between findings reported in these studies, and this has prompted researchers to focus on the influence of genetic factors on the morphology of these bones. In the light of the above observation, we considered it justified to conduct anatomical studies on wormian bones in different population groups; hence, we undertook the present study to look into the morphological details of these bones among a population in the eastern part of India...
June 2017: Anatomical Science International
https://www.readbyqxmd.com/read/27015686/facial-pillars-in-dogs-an-anatomical-study
#19
Michal Kyllar, Vaclav Paral, Martin Pyszko, Barbora Doskarova
This study describes the facial pillar system in dolichocephalic and brachycephalic breeds of dogs, and highlights its differences. Knowledge of facial pillar system anatomy is imperative to carry out successful fracture repair. The aim of our study was to describe the pillar system of the facial skeleton in dogs, and compare different shapes of dog skulls using native skulls, radiographs and computed tomography (CT). The heads of brachycephalic and dolichocephalic dogs were investigated following a maceration process using trans-illumination, radiography and CT...
June 2017: Anatomical Science International
https://www.readbyqxmd.com/read/27015685/histological-study-of-the-developing-pterygoid-process-of-the-fetal-mouse-sphenoid
#20
Masahito Yamamoto, Kei Kitamura, Masaaki Kasahara, Masamitsu Serikawa, Sakura Katumura, Toshihito Yoshimoto, Tadatoshi Matubayashi, Kento Odaka, Satoru Matsunaga, Shinichi Abe
The pterygoid process undergoes ossification of both the cartilage and membrane. However, few studies have attempted to explore the sequential development of the pterygoid process. Using histological examination, we performed morphological observations of the pterygoid process and surrounding tissue. ICR mice at embryonic days 13.5-18.0 and postnatal day 0 were used for morphological observations of the pterygoid process. By embryonic day 14.5, a mesenchymal cell condensation forming the anlage of the future medial pterygoid process differentiated into osteoid-like tissue and cartilage...
June 2017: Anatomical Science International
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