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Article
Aortic arch in rabbits: Morophological and Histological study
القوس الأبهري في الأرانب: دراسة شكليّة ونسجية

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Abstract

The study aimed to investigate the morphological and histological variations of the aortic arch of local breed rabbits (Oryctylagus conniculus). Nine adult local rabbits were obtained to study the aortic arch (four animals for corrosion cast technique, two injected with colored latex and three for histological study). All the rabbits were euthanized and exsanguinatd, for the cast of the aortic arch they injected by self polymerizing resin via the left ventricle of the heart and the specimens were macerated in (KOH %25) for two weeks and the cast of the aortic arch were prepared. Two main branches were identified from aortic arch (except in one cadaver has three branches). The brachiocephalic trunk firstly and the left subclavian artery, the two common carotid artery (right and left) and the right subclavian artery arising from brachiocephalic trunk, the right and left subclavian arteries gave the same branches (double vertebral arteries, costocervical trunk, cervical profound artery, internal thoracic artery, external thoracic artery, superficial cervical artery and continuous as axillary artery). Histologically the wall of the aortic arch is consist of three layers from internal to external: tunica intima, it's the thinnest layer (1±0.166) µm, tunica media, it's the thickest layer (12±0.0149)µm and tunica adventitia, the thickness of this layer is (5±0.166)µm. Tunica intima consisted of single layer of endothelial cells, tunica media consisted of numerous elastic lamina in a circular arrangement and the tunica adventitia was consisted of connective tissue, smooth muscle fibers, collagen fibers, few elastic fibers, fibroblast cells, and mast cells vasavasorum. The aortic arch has a large diameter (98±0.2019)µm and thickness of the wall is (18±0.0282)µm to convey the high blood pressure in aortic arch. In conclusion, there was a variation in the branches of the aortic arch in different species of animals when the results compared with other studies and also, the diameter, thickness of the wall of aortic arch varies from one animal to another.

ان الهدف من الدراسة الحالية هو بيان الاختلاف النسجي والشكلي للقوس الأبهري في الأرانب المحلية (Oryctylagus conniculus). اجريت دراسة القوس الأبهري في تسع ارانب محلية، اربع أرانب استعملت لتحضير قالب القوس الأبهري، اثنان منهما حقنتا بمادة اللاتكس الملون. واستعملت ثلاثة للدراسة النسجية، جميع الحيوانات خُدّرت واستُنّزفت وحُضّر قالب القوس الأبهري وذلك بحقن مادة الراتنج عن طريق البطين الأيسر للقلب، ثم عُطنّت باقي انسجة الحيوان وذلك بوضعة في محلول هيدروكسيد البوتاسيوم بتركيز 25% ولمدة اسبوعين. ينشأ من القوس الابهري فرعان رئيسان هما الجذع العضدي الدماغي أولاً والشريان تحت الترقوي الأيسر ويعطي الفرع الاول الشريانين السباتيين الأيمن والأيسر والشريان تحت الترقوي الأيمن والذي يعطي نفس الفروع التي يعطيها الشريان تحت الترقوي الايسر (شريانان فقاريان و الجذع العنقي الضلعي وشريان ضلعي غائر وشريان صدري داخلي وشريان صدري خارجي وشريان عنقي سطحي ويستمر باسم الشريان الابطي) .نسجيا يتكون جدار القوس الابهري من ثلاث طبقات وهي من الداخل الى الخارج (الغلالة الداخلية وهي اقل الطبقات سمكا (1±0.166) مايكروميتر والغلالة الوسطى وهي أكثر الطبقات سمكا (12±0.0149)مايكروميتر والغلالة البرانية ويبلغ سمك هذة الطبقة ((5±0.166 مايكروميتر). وتتكون الغلالة الداخلية من طبقة واحدة من الخلايا البطانية. أما الغلالة الوسطى فتتكون من طبقات من الألياف المرنة التي تترتب ترتيباً دائرياً، أما الغلالة البرانية فتتكون من النسيج الضام، الألياف العضلية الملساء، الألياف الغراوية، القليل من الالياف المرنة، الارومات الليفية والاوعية الدموية المغذية لجدار الوعاء الدموي، ويبلغ قطر القوس الابهري(98±0.2019) مايكروميتر ويبلغ سمك جدار القوس الابهري (18±0.0282) مايكروميتر لكي يستطيع تحمل ضغط الدم العالي في القوس الابهري. ونستنتج من الدراسة الحالية أن فروع وقطر وكذلك سمك جدار القوس الأبهري وقطره تختلف باختلاف نوع الحيوان وذلك عند مقارنة نتائج هذه الدراسة مع الدراسات السابقة.


Article
Anatomical And Morphometric Study Of The Trachea, Primary Bronchi And Lung In Laughing Dove ( Streptopelia Senegalensis(.

Authors: Nabeel Abd Murad Al-Mamoori --- Maha Abdul-Hadi Abdul-Rida Al-Abdula
Journal: Kufa Journal For Veterinary Medical Sciences مجلة الكوفة للعلوم الطبية البيطرية ISSN: 20779798 Year: 2016 Volume: 7 Issue: 2 Pages: 111-119
Publisher: University of Kufa جامعة الكوفة

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Abstract

In the current study use ten of the laughing dove (Streptopelia senegalensis) birds from both sexes, the body weight was (102.811±3.599gm). The present study include the morphometric features of the trachea, primary bronchi and lungs. The trachea was appear long flexible tube consist from several number of the cartilage rings closed like (O) shape which refer to the basic unit structure of the trachea. The mean length of the trachea was (6.166±0.176 cm) and this form (66.544 %) from the total length of the respiratory system. The primary bronchi appear as short tubes consist from several number of cartilage rings has (C) shape open from the medial side, connected together by transparent membrane. The length of right and left primary bronchi was ( 5.6 ± 0.4 mm ) ( 6.6 ± 0.2 mm ) and this form (6.043 %) (7.122%) respectively from the total length of the respiratory system. The lungs was pink into light red color, triangular or pyramidal-shaped. Each lung consist from two surfaces costal and visceral surfaces and three borders were lateral, medial and posterior borders. In the costal surface can be seen the lung contain five impressions. The length of the right and left lungs were ( 1.633 ± 0.02 cm ) ( 1.533 ± 0.03 cm ) and this form low percentage from the length of the respiratory system reaches into (17.623 %) and (16.544 %) and the thickness of right and left lungs were (4 ± 0.44 mm) (4.6 ± 0.49 mm), while the weight of the right and left lungs was (0.325 ± 0.032 gm) (0.308 ± 0.018 gm) respectively.


Article
Gross investigation and histological structure of abdominal aorta in local rabbits (Oryctylagus conniculus)

Authors: Maha Abdul-Hadi Abdul-Rida --- Nabeel Abd Murad --- Saffia Kareem Alumare
Journal: Al-Qadisiyah Journal of Veterinary Medicine Sciences مجلة القادسية لعلوم الطب البيطري ISSN: 18185746 23134429 Year: 2017 Volume: 16 Issue: 2 Pages: 77-84
Publisher: Al-Qadisiyah University جامعة القادسية

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Abstract

In the current study, fifteen rabbits from both sexes have been used to identify the anatomical and histological structure of abdominal aorta. Ten rabbits used for anatomical study. The celiac artery was a first branch of the abdominal aorta (A.A.) and then followed by the cranial mesenteric artery, right and left renal arteries, lumbar artery, caudal mesenteric artery and finally, it gives off two common iliac trunks. The splenic artery was the larger branch of the celiac artery and the cranial mesenteric artery was the greater branches of A.A. of rabbits. The lumber branches were very clear and a raised from the ventral aspect of A.A. There were numerous of jujenal arteries arises from a cranial mesenteric artery and the testicular or ovarian arteries sometimes originated above or below caudal mesenteric artery. Five rabbits used for a histological study of the abdominal aorta of three regions at the (celiac artery. renal artery. and common iliac artery). The abdominal aorta has consisted of three layers from internal to external tunica intima, T. media, and T. adventitia. The intima consists of a single layer of endothelial cells and it's the thinnest layer while T. media composed of numerous elastic laminae in a circular arrangement and it's the thickest layer finally T. adventitia was the outermost layer consist of smooth muscle fibers, collagen fibers, few elastic fibers, and vasa vasorum. The aim of this study to exposure the normal appearance of abdominal aorta by used the using corrosion cast & latex techniques and histological studies.

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Article
Histological and morphometric study of the skin appendages of local breed sheep ovis ovis

Authors: Maha Abdul-Hadi Abdul-Rida --- Nijah H.A. M --- Adnan W.A. B.
Journal: Al-Qadisiyah Journal of Veterinary Medicine Sciences مجلة القادسية لعلوم الطب البيطري ISSN: 18185746 23134429 Year: 2018 Volume: 17 Issue: 2 Pages: 109-116
Publisher: Al-Qadisiyah University جامعة القادسية

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Abstract

The aim of this study is provide histological and morphometric data information to the skin appendages of the local breed sheep regarding to the individual variation in different animal species to use in another sciences. The study carried out on ten healthy ram skin and the samples were taken during autumn season from fourth different anatomical sites (ventral ear surfaces, neck, middle dorsum, tail.). The study revealed that there were a number of skin appendages including( wool follicles and skin glands Sebaceous and sweat glands), two types of wool follicles were observed in the dermis (reticular layer) of the skin of local breed sheep in the form of primary and secondary wool follicles, the wool follicles in sheep were considered as a compound type in which there were more than one wool fiber emerged from one pore on the skin surface. The follicles was arranged as groups consist mainly of three follicles (Trio), in addition to (Dio) and (Mono) arrangement, in this study we noticed the greater diameter of the primary and secondary wool follicles in the neck region and the deeper primary wool follicles present in neck region ,while the deeper secondary wool follicles present in middle dorsum. In respect to the sebaceous glands, the present results indicate that they attached with the both types of wool follicles in which they opened at the upper part of the wool follicles via short duct the larger sebaceous gland found in neck region all the sweat glands of the skin of sheep were of Apocrine type, these glands which have large secretory parts and narrow duct were accompanied the primary wool follicle but the bigger sweat gland present in middle dorsum.

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