scholarly journals Anatomic variability of the nerves of the triceps surae in early human fetuses

Morphologia ◽  
2021 ◽  
Vol 15 (3) ◽  
pp. 101-108
Author(s):  
T.V Komar
Keyword(s):  
Functional Organization ◽  
Tibial Nerve ◽  
Age Groups ◽  
Triceps Surae ◽  
Human Fetuses ◽  
Crown Rump Length ◽  
Intramuscular Nerves ◽  
The Right ◽  
Early Human ◽  
Fibular Nerve

Background. Establishing fetal anatomical variability of intramuscular nerves and their connections plays an important role in the search for and development of new methods for the diagnostic and treatment posterior region of the leg. Objective – to find out the topographic and anatomical features of the innervation of the triceps surae in human fetuses 4-6 months. Methods. The study was performed on 46 human fetuses 81.0-230.0 mm crown-rump length (CRL) length using macromicroscopic preparation, vascular injection, and morphometry. Results. In early human fetuses, the anatomical variability of the distribution of intramuscular nerves in the thickness of the triceps surae was established, which is due to the variability of the structure and topography of the tibial nerve, structural and functional organization of triceps surae, arterial branching and interneural connections in the thickness of the heads of the gastrocnemius and soleus in fetuses of different and the same age groups, and sometimes in the same fetus. Conclusion. The main source of innervation of the triceps surae is the tibial nerve, which can be presented by a single trunk, main and additional trunks, or several independent trunks. The nerves in the thickness of the triceps are unevenly distributed. The highest concentration of muscular branches of the tibial nerve is determined in the medial head of the gastrocnemius and the medial part of the soleus. Information on fetal topography of intramuscular nerves in the thickness of the right and left triceps surae, as well as forms of their anatomical variability, both in fetuses of different and the same age and sometimes in the same fetus, due to structural-functional organization of the components of the triceps surae, the type of branching of arteries and nerves in the thickness of the heads of the gastrocnemius and soleus. Atypical variants of the topography of the tibial nerve and common fibular nerve in early fetuses, as well as interneural connections in the thickness of the components of the triceps surae, are more common on the right lower leg.

scholarly journals FETAL ANATOMY OF PARATHYROID GLANDS

2020 ◽  
Vol 73 (1) ◽  
pp. 52-57 ◽  
Author(s):  
Lesia Ya. Lopushniak ◽  
Тatiana V. Khmara ◽  
Оleh М. Boichuk ◽  
Mariana A. Ryznychuk ◽  
Leonid V. Shvyhar ◽  
...  
Keyword(s):  
Jugular Vein ◽  
Age Groups ◽  
Parathyroid Glands ◽  
Brachiocephalic Vein ◽  
Human Fetuses ◽  
Crown Rump Length ◽  
Fetal Period ◽  
External Structure ◽  
Human Ontogenesis ◽  
The Right

The aim: To study the forms of anatomical variability of the external structure of the upper and lower parathyroid glands in the fetal period of human ontogenesis. Materials and methods: The study involved 48 specimens of human fetuses with 81,0-375,0 mm of crown-rump length (CRL). The study was conducted by means of macromicroscopic preparation, morphometry and variation statistics method. Results: The age and individual anatomical variability, complex way of development and formation of synotopic embryotropographic correlations of the upper and lower parathyroid glands in the prenatal period of human ontogenesis create numerous prerequisites for the emergence of variants of their external structure and topography in the fetuses of both different and the same age groups. Conclusions: There is a significant anatomical variability of the upper and lower parathyroid glands in 4-10-month-old fetuses, which is manifested by varieties of their shape and topical location. Aplasia of the upper parathyroid glands, which was found in two human fetuses aged 7 months, was due to the fetures of their organogenesis and the formation of syntopy in the embryonic and prefetal periods of their development. Parathyroid glands are mainly supplied with blood by the branches of the inferior thyroid artery. The branches of the upper thyroid artery and the arteries of adjacent organs: larynx, trachea and esophagus are involved in the blood supply. The right and left inferior thyroid veins are tributaries of the corresponding brachiocephalic vein, paired (right and left) superior and middle thyroid veins are those for the internal jugular vein.

scholarly journals PECULIARITIES OF PRENATAL VAGINA MORPHOGENESIS

2019 ◽  
Vol 72 (1) ◽  
pp. 72-78 ◽  
Author(s):  
Tetiana V. Khmara ◽  
Іhor І. Zamorskii ◽  
Mariana O. Ryznychuk ◽  
Mariana I. Kryvchanska ◽  
Oleh M. Boichuk ◽  
...  
Keyword(s):  
Rapid Development ◽  
Age Groups ◽  
Posterior Wall ◽  
Reproductive Organs ◽  
Urogenital Sinus ◽  
Human Fetuses ◽  
Crown Rump Length ◽  
Human Ontogenesis ◽  
Upper Third ◽  
Female Reproductive Organs

Introduction: The rapid development of perinatal gynecology requires from the anatomists comprehensive studies of the patterns of prenatal morphogenesis and the development of topographic and anatomical relationships of female reproductive organs in the human fetuses of different age groups. The aim: To study the development and formation of the vaginal topography in the prenatal period of human ontogenesis. Materials and methods: The study has been conducted based on 23 series of histological and topographic-anatomical sections of human prefetuses aged 9-12 weeks with 31.0-80.0 mm of crown-rump length (CRL) and 83 specimens of female human fetuses aged 4-9 months with 81.0-345.0 mm of CRL by means of a complex of adequate morphological methods of investigation. Results and conclusions: Vaginal formation occurs during the 9th week of embryogenesis (prefetuses of 31.0-41.0 mm of CRL) due to the fusion of two different embryonic structures: mesodermal paramesonephral ducts and endodermal urogenital sinus. In this case, the caudal regions of the paramesonephral ducts are transformed into the uterus and the superior two thirds of the vagina, and the inferior third of the vagina develops from the urogenital sinus. Common uterovaginal canal, divided into right and left cavities by mesenchymal septum, is formed in the female prefetuses of 38.0-43.0 mm of CRL due to the fusion of the caudal regions of the paramesonephral ducts in the area of the posterior wall of the urogenital sinus. Complete dissolving of the septum of the uterovaginal canal occurs in prefetuses of 55.0-58.0 mm of CRL. The anterior and posterior vaginal vaults of the same depth are formed in 5-month-old fetuses. Canalization of vagina in the caudo-cranial direction is observed in the fetuses of 170.0-185.0 mm of CRL, with no clear boundary between the uterovaginal canal and the urogenital sinus. The vaginal epithelium in the upper third part originates from the uterovaginal canal, and in the lower two thirds of the vagina – from the urogenital sinus. In the 6-month-old fetuses there was detected the variability of the shape of the superior, middle and inferior third of the vagina, namely: oval (5 cases), elongated-oval (2 cases), stellate (1 case); in the lower third, the H-shaped form was predominantly found (6 fetuses). The proliferation of the hymen membrane occurs in fetuses of 220.0-245.0 mm of CRL. The absence of timely proliferation of the hymen membrane can lead to its atresia, and its premature proliferation causes the appearance of transverse vaginal septa.

362: The right and the left Testis Migrates at the same time? Analisys in 144 human fetuses

2007 ◽  
Vol 177 (4S) ◽  
pp. 121-121
Author(s):  
Luciano A. Favorito ◽  
Francisco J.B. Sampaio
Keyword(s):  
Human Fetuses ◽  
Left Testis ◽  
The Right

scholarly journals A CBCT Based Three-Dimensional Assessment of Mandibular Posterior Region for Evaluating the Possibility of Bypassing the Inferior Alveolar Nerve While Placing Dental Implants

Diagnostics ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 406 ◽  
Author(s):  
Mohammed G. Sghaireen ◽  
Kumar Chandan Srivastava ◽  
Deepti Shrivastava ◽  
Kiran Kumar Ganji ◽  
Santosh R. Patil ◽  
...  
Keyword(s):  
Nerve Injury ◽  
Age Groups ◽  
Inferior Alveolar Nerve ◽  
Three Dimensions ◽  
High Rate ◽  
Cortical Plate ◽  
Computed Tomography Images ◽  
Group I ◽  
Linear Distance ◽  
The Right

A high rate of nerve injury and related consequences are seen during implant placement in the posterior mandibular arch. An approach has been proposed to avoid nerve injury by dodging the inferior alveolar nerve (IAN) while placing an implant. A prospective study with a total of 240 CBCT (cone beam computed tomography) images of patients with three dentate statuses, namely, edentulous (group I), partially edentulous (group II) and dentate (group III) were included in the study. The nerve path tracing was done on CBCT images with On-demand 3D software. The three dimensions, i.e., the linear distance from the outer buccal cortical plate to the inferior alveolar nerve (BCPN), linear distance from the outer lingual cortical plate to the inferior alveolar nerve (LCPN) and linear distance from the midpoint of the alveolar crest to the inferior alveolar nerve (ACN) were assessed. The data were presented and analyzed between variables using one-way ANOVA and independent t-test in SPSS version 21.LCPN of the right 1st premolar region (p < 0.05) was significantly different among the groups with edentulous subjects recorded with the minimum value (6.50 ± 1.20 mm). Females were found to have significantly (p < 0.05) less available bone (6.03 ± 1.46 mm) on the right side of the mandibular jaw compared to males in edentulous group of patients. On comparing age groups for partially edentulous subjects, LCPN of the right 1st premolar region had significantly (p < 0.05) less available bone (6.03 ± 0.38 mm) in subjects with age ≥54 years. The IAN follows a lingual course in the molar region and later flips to the buccal side in the premolar region. The LCPN dimension in the 1st and 2nd premolar region was found to be more than 6 mm irrespective of age, gender and side of the jaw. Thus, it can be considered as a suitable site for placing implants while bypassing the IAN with CBCT assessment remaining as the mainstay in the pre-surgical phase.

scholarly journals The role of prefrontal cortex in working memory: examining the contents of consciousness

1998 ◽  
Vol 353 (1377) ◽  
pp. 1819-1828 ◽  
Author(s):  
◽  
S. M. Courtney ◽  
L. Petit ◽  
J. V. Haxby ◽  
L. G. Ungerleider
Keyword(s):  
Working Memory ◽  
Prefrontal Cortex ◽  
Visual Processing ◽  
Right Hemisphere ◽  
Functional Organization ◽  
Spatial Working Memory ◽  
Domain Specificity ◽  
Long Term Memory ◽  
Present Evidence ◽  
The Right

Working memory enables us to hold in our ‘mind's eye’ the contents of our conscious awareness, even in the absence of sensory input, by maintaining an active representation of information for a brief period of time. In this review we consider the functional organization of the prefrontal cortex and its role in this cognitive process. First, we present evidence from brain–imaging studies that prefrontal cortex shows sustained activity during the delay period of visual working memory tasks, indicating that this cortex maintains on–line representations of stimuli after they are removed from view. We then present evidence for domain specificity within frontal cortex based on the type of information, with object working memory mediated by more ventral frontal regions and spatial working memory mediated by more dorsal frontal regions. We also propose that a second dimension for domain specificity within prefrontal cortex might exist for object working memory on the basis of the type of representation, with analytic representations maintained preferentially in the left hemisphere and image–based representations maintained preferentially in the right hemisphere. Furthermore, we discuss the possibility that there are prefrontal areas brought into play during the monitoring and manipulation of information in working memory in addition to those engaged during the maintenance of this information. Finally, we consider the relationship of prefrontal areas important for working memory, both to posterior visual processing areas and to prefrontal areas associated with long–term memory.

ATTITUDE TOWARDS MYTHS AND MISCONCEPTIONS AMONG ADOLESCENT GIRLS DURING THE MENSTRUATION

2021 ◽  
pp. 42-43
Author(s):  
J. C. Kavitha Latha ◽  
R. Varalakshmi
Keyword(s):  
Adolescent Girls ◽  
Transition Period ◽  
Age Groups ◽  
Adult Life ◽  
Negative Attitude ◽  
Adult Age ◽  
Hygiene Practices ◽  
Minimal Sample ◽  
High Attitude ◽  
The Right

Adolescents are dened as the young people between the age groups of 10 and 19 years as per the WHO records. Adolescence is a transition period from childhood to adult life as it is regarded as the intermediate period between the childhood age and the adult age. Menstruation occurs every month periodically except during pregnancy. The maintenance of menstrual hygienic methods is a very challenging task to the adolescent girls. Social prohibitions and traditional beliefs blocked the access to get the right kind of information to adolescent girls that led to poor hygiene practices. Menstruation has often been dealt with secrecy in many cultures. Aim: Attitude towards myths and misconceptions among adolescent girls during the menstruation. To assess the attitude regarding myths Objective: and misconceptions among adolescent girls during the menstruation. To examine the level of attitude of adolescent girls towards Myths and Misconceptions Tool: The Tool used for the present study was self structured questionnaire which was developed by the researcher. Results: Many of number of adolescent girls is having low attitude i.e., having many myths and misconceptions towards menstruation and very few sample is having high attitude which is indicating that minimal sample is not having negative attitude towards the myths and misconceptions. Sample: Sample of the present study consists of 300 adolescent girls from government vocational colleges in Chittoor District of Andhra Pradesh State. There are signicant differences between age, religion, educational quali Conclusion: cations of mother's, type of family and mode of communication among adolescent girls with regard to their attitude towards myths and misconceptions during the menstruation. There is low level of attitude towards the myths and misconceptions among adolescent girls during the menstruation

scholarly journals Comorbidity between Klinefelter syndrome and diaphragmatic hernia. A case report

2014 ◽  
Vol 132 (5) ◽  
pp. 311-313
Author(s):  
Carolina Melendez Valdez ◽  
Stephan Philip Leonhardt Altmayer ◽  
Adyr Eduardo Virmond Faria ◽  
Aline Weiss ◽  
Jorge Alberto Bianchi Telles ◽  
...  
Keyword(s):  
Diaphragmatic Hernia ◽  
Ultrasound Examination ◽  
Klinefelter Syndrome ◽  
Age Groups ◽  
Left Lung ◽  
Left Lobe ◽  
Imaging Studies ◽  
Left Hemithorax ◽  
Prenatal Imaging ◽  
The Right

CONTEXT: Intrathoracic cystic lesions have been diagnosed in a wide variety of age groups, and the increasing use of prenatal imaging studies has allowed detection of these defects even in utero.CASE REPORT: A 17-year-old pregnant woman in her second gestation, at 23 weeks of pregnancy, presented an ultrasound with evidence of a cystic anechoic image in the fet al left hemithorax. A morphological ultrasound examination performed at the hospital found that this cystic image measured 3.7 cm x 2.1 cm x 1.6 cm. Polyhydramnios was also present. At this time, the hypothesis of cystic adenomatoid malformation was raised. Fet al echocardiography showed only a dextroposed heart. Fet al magnetic resonance imaging produced an image compatible with a left diaphragmatic hernia containing the stomach and at least the first and second portions of the duodenum, left lobe of the liver, spleen, small intestine segments and portions of the colon. The stomach was greatly distended and the heart was shifted to the right. There was severe volume reduction of the left lung. Fet al karyotyping showed the chromosomal constitution of 47,XXY, compatible with Klinefelter syndrome. In our review of the literature, we found only one case of association between Klinefelter syndrome and diaphragmatic hernia.CONCLUSIONS: We believe that the association observed in this case was merely coincidental, since both conditions are relatively common. The chance of both events occurring simultaneously is estimated to be 1 in 1.5 million births.

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