هدفت الدراسة الحالية لمقارنة النسيج الطلائي في الطبقة المخاطية لأجزاء جهاز الهضم عند ثلاثة أنواع من الفقاريات الدنيا: القرش Scyliorhinus caniculaوالقجاج Sparus aurata, والسلمندر Salamandra infraimmaculata . أظهرت نتائج الدراسة النسيجية و المقارنة أن معظم أجزاء جهاز الهضم للأنواع المدروسة مبطنة بنسيج طلائي بسيط في حين أن بعضها الآخر مبطن بنسيج طلائي مطبق كاذب. كما لوحظ وجود خلايا غوبلت (الخلايا الكأسية) في جميع الأجزاء المدروسة و زيادة عددها في بعض أجزاء جهاز الهضم وفقا للنوع المدروس . و تميز المري ببطانة من نسيج طلائي عمودي مهدب ، كما لوحظ وجود غدد انبوبية في ظهارة المعدة. أما الصفيحة الخاصة فكانت واضحة في كل أجزاء الجهاز الهضمي مع وجود فروقات بسيطة بحسب نوع الحيوان المدروس.
The present study aimed to compare the epithelium tissue of mucosa layer of
gastrointestinal tract in three types of lower vertebrates: Scyliorhinus canicula, Sparus
aurata, Salamandra infraimmaculata. The results of the histological and comparative
study showed that the majority of digestion system parts were lined with simple
epithelium tissue while others were lined by pseudostratified epithelium tissue. Goblet
cells were distributed in all studied parts of digestion systems with density in some
locations. Esophagus was characterized by ciliated epithelium tissue, and the tubular
glands were presents in the stomach mucosa. Concerning the Lumina properia, it was
visible in all digestive system parts with some differences according to the animal species
studied.
References used
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The research project sample consisted of 30 blocks of composite resin , these blocks where divided into three equal groups , 10 of composite resin Z-250 from 3M ESPE Company , 10 of the composite resin Supreme from 3M ESPE Company ,10 of the composit
This study compared the durability of a cast metal wedge restoration, a cast metal endocrown restoration, and a method of constructing a composite resin core without a root wedge when applying 45-degree inclined compressive forces using a mechanical testing device.
Five species of Poaceae were collected: Briza minor L., Briza
maxima L., Setaria viridis (L.) P.B., Setaria verticillata (L.)
P.B., and Eleusine indica Gaertn., Fruct. Sem. Pl. which
recorded for the first time in the Flora of Syria. Peels from
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The aim of this study is to evaluate the change in structure of oral
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attachment or Molloplast-B-. Twenty patients, males and females,
have been taken with age ranges between (40-71 years),
Post-obturation pain is one of the primary problems following
root canal treatment. Although in most cases pain does not last
long, but could be a source of embarrassment to the dentist and
annoying for the patient.
This study was conducted to in