حيث يمكن للطلاب مناقشة كل النقاط العلمية المتعلقة بهذه المحاضرة مع استاذ المادة
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QUIZ4)types of cells in the anterior pituitary gland and how they classified?
At microscope the Pars distalis of the anterior lobe of the pituitary we can see bundles and cords of epithelial glandular cells polygonal shaped. Among these clumps, can be seen walls of connective tissue highly vascularized.
Using hematoxylin -eosin stain these cells can be differentiated into two main groups:
- Chromophil (those cells which are colored with this stain technique). Chromophil cells can be subdivided into two groups:
- Acidophil: These cells are characterized by a dense pink stained cytoplasm (eosinophil).
- Basophil: The cytoplasm of this types of cells is stained in light purple.
- Chromophobe (those cells which don t stain in this technique).
According to the secreted hormones we can differentiate up to five cells types on this area:
- Somatotrophic. Secretes GH (Growth Hormone).
- Lactotrophic. Secretes PRL (Prolactin).
- Thyrotrophic . Secretes TSH (Thyroid Stimulating Hormone).
- Gonadotrophic. Secretes FSH and LH (Follicle Stimulating Hormone and Luteinizing Hormone).
- Corticotrophic. Secretes ACTH (Adrenal Cortico Trophic Hormone).
In order to differentiate these cells types on the microscope we need to use special staining techniques like immunohistochemical ones. Using Hematoxylin-eosin stained slides these five cell types are seen as chromophiles. In this way Somatotrophic and Lactotrophic are Acidophil, while Thyrotrophic, Gonadotrophic and Corticotrophic are Basophil.
التاريخ
24/12/2016 15:25:40
كتب السؤال
الاء حسين محمود A2
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العفو دكتوره بس ممكن متعتبرين الجواب اعلاه هو جواب للكوز الاول لان جنت متوهمه بتحديد المحاضره المطلوبه
التاريخ
24/12/2016 07:17:59
كتب السؤال
غاده حامد جدوع
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Q\diffrentiate between brush and ciliated cels?
A\brush cells are cell who have mictovilli (minute finger -like )
(projections of the plasma membrane
function of brush cells 1-increase surface area for absorption ((intestine
2-transport the absorbed material (bythe microfilments in the central core)
3-participate in the digestion of carbohydrate
ciliated cells are cells who have cilia which are long hair like projections of plasma membrane
function\\beat toward one direction ,therby moving the entrangled particles from the surface (beat towards pharynx in respiratory tract .and towards uterine tube
التاريخ
24/12/2016 06:30:43
كتب السؤال
غاده حامد جدوع
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الرجوع للمحاضرة مرة اخرى
أسم الطالب الثلاثي
ان كنت تنوي كتابة معلومات شخصية فالنظام يود اعلامك بان جامعة بابل لا تضمن خصوصيتك الفردية على الانترنيت
لا تقم بالضغط اكثر من مرة واحدة فقط وانتظر النظام ليقوم بالتحديث
يتم معالجة طلبــك , يرجى الانتظار ...
