scholarly journals Epimorphosis of Heterosymelic Appendages in Tegenaria Atrica (Araneae, Agelenidae)

2009 ◽  
Vol 54-55 (1-4) ◽  
pp. 43-58 ◽  
Author(s):  
Teresa Napiórkowska ◽  
Lech Jacuński ◽  
Julita Templin

Epimorphosis of Heterosymelic Appendages inTegenaria Atrica(Araneae, Agelenidae)Studies of epimorphic regeneration of appendages were carried out on larvae and nymphs ofTegenaria atricaC.L. Koch with heterosymely (accretion of appendages on the same side of the body) of two walking appendages and of walking appendages with pedipalpi. All the anomalies were obtained by exposing developing embryos to alternate temperatures of 14 and 32°C. Amputation of fragments of anomalous appendages was always followed by regeneration. Based on the characteristic external structures of the regenerating joints, successive stages of epimorphosis were estabilished, whose start and end were marked by ecdyses. Several types of regenerates were found, whose anatomical structure did not undergo further significant changes until the end of our observations.

Perception ◽  
10.1068/p6796 ◽  
2011 ◽  
Vol 40 (1) ◽  
pp. 95-98 ◽  
Author(s):  
Rebekah C White ◽  
Anne M Aimola Davies

2013 ◽  
Vol 58 (1-2) ◽  
pp. 19-28
Author(s):  
Julita Templin ◽  
Teresa Napiórkowska

Abstract Oligomely is a type of developmental anomaly occurring in embryos of the spider Tegenaria atrica C.L. Koch under the teratogenic influence of temperature. This anomaly is of metameric origin, as it results from a disorder of metamere formation on the germ band during embryogenesis, resulting in the absence of one half or the whole metamere. In such a case, one or more appendages are missing on one or both sides of the body in a spider leaving a chorion. This anomaly induces changes both in the anatomical structure and exoskeleton of a spider (deformation of carapace and sternum). Carapace length and sternum area were measured, as well as the duration of the subsequent nymph stages of oligomelic individuals with one of the walking appendages missing (always on the right side of the body) was recorded. The consecutive nymph stages of oligomelic individuals lasted for a much shorter time compared with control specimens. This acceleration of development is probably to offset losses incurred during embryogenesis. In the early postembryogenesis, oligomelic specimens exhibited shorter carapace length and smaller surface area of the sternum compared to control individuals, which resulted from the lack of half of the metamere corresponding to the missing leg. However, in older nymph stages, a strong tendency for the faster growth of both carapace and sternum was observed, which can be defined as a compensatory growth increase making up for the losses caused by the anomaly.


2020 ◽  
Vol 5 (10) ◽  
pp. 691-698
Author(s):  
Jean-Charles Le Huec ◽  
Stephane Bourret ◽  
Wendy Thompson ◽  
Christian Daulouede ◽  
Thibault Cloché

The sacroiliac joint (SIJ) is a complex anatomical structure located near the centre of gravity of the body. Micro-traumatic SIJ disorders are very difficult to diagnose and require a complete clinical and radiological examination. To diagnose micro-trauma SIJ pain it is recommended to have at least three positive provocative specific manoeuvres and then a radiologically controlled infiltration test. Conservative treatment combining physiotherapy and steroid injections is the most common therapy but has a low level of efficiency. SIJ thermolysis is the most efficient non-invasive therapy. SIJ fusion using a percutaneous technique is a solution that has yet to be confirmed on a large cohort of patients resistant to other therapies. Cite this article: EFORT Open Rev 2020;5:691-698. DOI: 10.1302/2058-5241.5.190081


2021 ◽  
Vol 13 ◽  
pp. 23
Author(s):  
Kamla pathak

A wound refers to the loss in normal anatomical structure and functional integrity of the skin which is an outermost layer and first line defense of the body. It can be described by different ways based on its etiology, anatomical location, healing time, and level of contamination.


Author(s):  
Shaozong CHEN

LANGUAGE NOTE | Document text in Chinese; abstract also in English.本文簡要介紹針灸學現代化研究的三個成就:交叉學科全息生物醫學、現代時間針失學和現代針灸學的產生;針刺信號的傳導通路和針刺鎮痛的生理學基礎;經終實質的重新認識。在此基礎上,本文對相關的理論探索和發展進行討論和評價。This essay introduces and assesses some major achievements that have been made in scientific research concerning modernizing acupuncture, a main discipline of traditional Chinese medicine. These achievements include the development of interdisciplinary subjects such as holographic bio-medicine, modern tempera-acupuncture, and modern acupuncture; the account of the propagating route of the signs caused by acupunctural stimulates and the physiological basis for acupunctural analgesia; and the new thought on the essence of jingluo (channel).There are some special acupunctural points in the body, such as the points in the ear, hand, and foot, which cannot be accounted for through the traditional Chinese medical theories. Unlike general acupunctural points, these special points in a particular location (like the ear) reflect the situation of the whole body. They are like miniature of the body. Only the new theory of holographic bio-medicine can appropriately account for physiological and pathological phenomena of these special points. Moreover, it has long been found that stimulating the same points at different time of the day generates different effects. This fact is also confirmed by contemporary research. The development of modern tempera-acupuncture attempts to discover rules in employing acupunctural treatment to the patient in the best time.For many years Chinese researchers have been trying to find a basic anatomical structure for acupunctural channels. They had confidence in the belief that "structure determines function." For them, this means that if there is a particular function, there must be a specific structure "behind" it to make this function possible. However, the series of efforts in disclosing a specific structure for the channel have failed one after another. The failure indicates the defect of the claim that a particular structure determines a particular function. From an epistemic perspective, it may well be the case that function suggests structure. The channel system in traditional Chinese medicine may be a supra-anatomical structure; in other words, it is not sustained directly by any particular anatomical structure, but by a network of the whole body in relation to a number of anatomical aspects.DOWNLOAD HISTORY | This article has been downloaded 31 times in Digital Commons before migrating into this platform.


Author(s):  
Angelica Maria Ramirez ◽  
Begoña Calvo Calzada ◽  
Jorge Grasa

The human and vertebrate interaction with the environment is done primarily through the movement. This is possible due the skeletal muscle: anatomical structure able to contract voluntarily. The skeletal muscles are made up of contractile proteins which slide one over another allowing the muscle shortening and the body force generation. This protein structure of actin and myosin maintains its organization through the connective tissue that surrounds it (endomysium, perimysium and epimysium), creating arrays of myofibrils, fibre bundles, fascicles until conform the whole muscle. All this connective tissue extends to the ends of the muscle to form the tendon.


2021 ◽  
Vol 22 (1) ◽  
pp. 31-35
Author(s):  
P. G. Koynosov ◽  
◽  
L. V. Vikhareva ◽  
Al. P. Koynosov ◽  
S. A. Orlov ◽  
...  

Goal. To establish the features of the anatomical structure of the body of young men and women of various constitutional types and social groups. Material and methods. The somatotypological features of 328 children aged 17-18 years, who were students of secondary educational institutions of the Tyumen region, were determined. The data on the study were distributed according to the following characteristics: age, gender, constitution, and social group. The main group consisted of people who lived in dysfunctional families, and the children from the control group grew up and were brought up in prosperous conditions. Results. The study significantly complements the data on the physical development of young children of different constitutions and social groups of the Tyumen region. The obtained metric characteristics are the basis for creating an algorithm for evaluating somatic types in the considered child population. The morphotypological deviations in physical development revealed in the course of the study make it possible to prevent the development of pathological processes and to correct the existing disorders. Conclusion. Individual and typological features of the physique are recommended for use in the selection of preventive measures for health protection in educational institutions and the development of regional corrective health programs.


Vestnik ◽  
2021 ◽  
pp. 51-56
Author(s):  
А.Т. Кодасбаев ◽  
Т.Ж. Егембердиев ◽  
Г.Ж. Саржанов ◽  
М.А. Жакаев

В учении о конституции человека определено, что особенности или вариации телосложения, его анатомии определяют его предрасположенность к определенным заболеваниям, определяют особенности обмена веществ. Это может означать, что данная закономерность действительна на всех уровнях морфологии или организации анатомического строения. Хирургия ИБС позволяет изучать конституциональные особенности организма на многих уровнях, сочетая анатомию, физиологию и патологию. The doctrine of Human constitutions says that the features or variations of the human physique, its anatomy determine its adherence to certain diseases, determine the characteristics of metabolism. This may mean that this pattern is valid at all levels of morphology or organization of the anatomical structure. IHD surgery makes it possible to study the constitutional characteristics of the body at many levels, combining anatomy, physiology and pathology.


Author(s):  
Masanori Tsujino ◽  
◽  
Tsutomu Fujinami ◽  
Keisuke Nagai

Even though coordination is the key to explaining skillful movement, as advocated by Bernstein, analyzing the coordinative structure of body parts remains yet to be fully addressed. Pattern matching applied to analyzing skillful movement cannot describe the coordinative structure. A correlation network is useful for identifying the most influential factor in the web of correlations among factors. The correlation network is thus thought to be effective in analyzing coordinative structures because it enables us to identify the body partmost influential in skillful movement. As an example of skillful movement, we investigated traditional Japanese Heike-daiko drumming to see if we could describe the coordinative structure through this approach. We created correlation networks among body parts involved in playing the Heike-daiko. We asked a Heike-daiko player to play a rhythmic pattern typical of traditional drumming and collected data on movement using a motion capture device. We split the performance sequence into 10 sections, each exhibiting a unique characteristic of the player. It was difficult for onlookers to distinguish these 10 patterns because differences were too subtle to recognize visually. By applying our method to data, we found overlaps among the 10 sections in that the same set of body parts tends to form a network through the sequence. Results suggest that movement similarities and differences can be captured by comparing correlation networks among body parts. We also found two classes of coordinative structure, one reflecting our anatomical structure and the other quite different from it. We found that second class classifies skillful movement.


Parasitology ◽  
1930 ◽  
Vol 22 (2) ◽  
pp. 168-181 ◽  
Author(s):  
D. Keilin ◽  
P. Tate

In previous papers one of us (Keilin, 1915, 1917) has shown that among cyclorrhaphous dipterous larvae there is a remarkable correlation between the anatomical structure of the larvae and their mode of life. Although the mode of life of the larvae is in correlation with such anatomical features as thickness and hardness of the body-wall, the development of sensory organs on the head, and the structure of the alimentary canal, it is in the bucco-pharyngeal armature that the most obvious and important adaptations are to be found. The most important of these adaptations may be mentioned briefly. In certain cyclorrhaphous dipterous larvae the ventral wall of the basal sclerite of the bucco-pharyngeal armature has a number of longitudinal ridges projecting into the lumen of the pharynx. These ridges are usually Y-shaped at their free borders, and form a series of longitudinal channels in the ventral region of the pharynx. In other cyclorrhaphous dipterous larvae such ridges are absent and the ventral wall of the pharynx is smooth. This character allows the larvae to be divided into two groups—“all cyclorrhaphous dipterous larvae parasitic on the most diverse animals or on plants, as well as carnivorous larvae, and larvae which suck the blood of mammals, never have ridges in their pharynx; on the contrary, ridges are always present in saprophagous larvae” (Keilin, 1915). All the larvae which are devoid of ridges and are either parasitic, carnivorous, pass their whole life in the uterus of the female, or are phytophagous, may be united into the group of biontophagous; all larvae which have ridges are saprophagous.


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