کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9436689 | 1615698 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Smooth muscle in the annulus fibrosus of the tympanic membrane in bats, rodents, insectivores, and humans
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کلمات کلیدی
μMH&E - H & EEDTA - اتیلن دی آمین تترا استیک اسید ethylene diamine tetra-acetic acid - اتیلن دیامین تترا استیک اسیدTem - این استLSM - سازمان غیر دولتیsmooth muscle - عضله صاف tympanic membrane - غشای تمپانAnnulus fibrosus - فیبروروز انولوسLaser scanning microscope - میکروسکوپ اسکن لیزرTransmission electron microscope - میکروسکوپ الکترونی انتقالLight microscope - میکروسکوپ نورcochlear microphonic - میکروفون کچلیHematoxylin and Eosin - هماتوکسیلین و ائوزین
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
سیستم های حسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Smooth muscle in the annulus fibrosus of the tympanic membrane in bats, rodents, insectivores, and humans Smooth muscle in the annulus fibrosus of the tympanic membrane in bats, rodents, insectivores, and humans](/preview/png/9436689.png)
چکیده انگلیسی
The annulus fibrosus and its attachment to the bony tympanic ring were studied in a series of mammals. In the pallid bat, Antrozous pallidus, there is an extensive plexus of large interconnected blood sinuses in the part of the annulus that borders the tympanic bone. The spaces between the sinuses are packed with smooth muscle cells. Most of the cells have a predominately radial orientation; they extend from the bony tympanic sulcus to a dense collagenous matrix (apical zone) where radially oriented fibers of the pars tensa are confluent with the annulus. The muscles and vessels constitute a myovascular zone. A structurally similar myovascular zone is also present in the European hedgehog. In rodents, the annulus lacks the large interconnected blood sinuses but many small vessels are present. Smooth muscle is concentrated in the broad area of attachment of the annulus to the tympanic bone. In the gerbil, smooth muscle seems to be concentrated in the central part of the width of the annulus where it is attached to bone and radiates toward the tympanic membrane. In humans collections of radially oriented smooth muscle cells were found in several locations. The smooth muscle in all species studied appears to form a rim of contractile elements for the pars tensa. This arrangement suggests a role in controlling blood flow and/or creating and maintaining tension on the tympanic membrane.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hearing Research - Volume 200, Issues 1â2, February 2005, Pages 29-37
Journal: Hearing Research - Volume 200, Issues 1â2, February 2005, Pages 29-37
نویسندگان
M.M. Henson, V.J. Madden, H. Rask-Andersen, O.W. Jr.,