AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |
Back to Blog
Partes del cerebro4/8/2023 ![]() El aspecto más común se caracterizó por unas pequeñas neuronas soportadas por neuroglias. Los resultados histológicos revelaron que la corteza cerebral está formada de varias capas de neuronas mal definidas. La médula oblongada mostró en algunos casos una flexión pontina evidente, en otros ausencia de puentes o la aparición de un cuerpo trapezoide. El cerebelo estaba caracterizado por la vermis central que tenía numerosas fisuras transversales y dos pequeños flóculos laterales en su superficie lateral. Un gran quiasma y tracto óptico demostraron ser continuos con los lóbulos ópticos. ![]() El diencéfalo dio lugar a la glándula pineal, que es una estructura en forma de tubo invertida con un triángulo obtuso en su parte inferior. El bulbo olfatorio era pequeño, con un lóbulo olfativo sin desarrollar. El cerebro tuvo una forma romboidal, con cerebelo grande triangular obtuso con una protuberancia dorsomedial sagital. El cerebro se estudió macroscópica y microscópicamente, y las mediciones de todas las partes del cerebro fueron registradas. RESUMEN: El objetivo fue describir las características morfológicas del cerebro de la avestruz africana. The fourth ventricle was lined by pseudo stratified columnar ciliated ependymal cells. The cell nuclei of the medulla oblongata were formed from few multipolar neurons, supported by few neuroglia. ![]() The medulla oblongata was covered by pia mater of loose connective tissue that covered with simple squamous epithelium and vascular supply extended beneath the pia mater. The cerebellar cortex consists of three layers namely molecular layer, Purkinje cells layer and internal granular layer, the layer of Purkinje cells characterized by a very large cell body. The most common appearance characterized by few small neurons supported by neuroglia. The histological results revealed that the cerebral cortex formed of several ill-defined layers of neurons. The medulla oblongata with clear pontine flexure and no obvious pons or trapezoid body appeared. The cerebellum was represented by central vermis that had numerous transverse fissures and two small lateral floccules on its lateral surface. ![]() Large optic chiasm and optic tract demonstrated that continued to the optic lobes. The diencephalon gave rise to the pineal gland, which was inverted tubal structure with an obtuse triangle bottom. The olfactory bulb was small with undeveloped olfactory lobe. The brain of ostrich was rhombus in shape with large obtuse triangular cerebrum with sagittal dorsomedial wulst. The brain was studied macroscopically, microscopically and the measurements of all brain parts were demonstrated. SUMMARY: The aim of the current study focused on the morphological features of the brain of the African ostrich. *Anatomy and Embryology department, Faculty of Veterinary Medicine, Alexandria University, Edfina, Egypt. Investigación Morfológica del Cerebro de la Avestruz Africana ( Struthio camelus)Īshraf A. Upload the shaded image into Photo 1.Review the bones listed in Data Table 1 and determine if each is present on the skeletons provided on the downloaded worksheet.Note: Some bones may not be present on all skeletons.Record the vertebrate classes (Osteichthyes, Amphibia, Reptilia, Aves, and Mammalia) that possess each bone in Data Table 1.Complete Data Table 1 by describing the function of each of the listed bones.Morphological Investigation of the Brain of the African Ostrich ( Struthio camelus) Shaded vertebrate skeleton illustrating the vertebral column, pectoral girdle, and pelvic girdle. Vertebrate skeletons worksheet.Using software or colored pencils, shade the vertebral column of each specimen green, the pectoral girdle pink, and the pelvic girdle yellow. Image copyright Suphatthra, Revers, BlueRingMedia, and 3DRenderings, 2014. ProcedureDownload the Vertebrate Skeletons worksheet shown in Figure 16. You will relate the skeletal structure of each specimen to its mode of locomotion. Make sure to post the Photo 1: Shaded Vertebrate Skeletons in the document as well.Exercise 1 Comparison of Vertebrate SkeletonsIn this exercise, you will identify homologous and unique bones on the skeletons of five vertebrates. Complete the lab and fill out the table and the 4 questions attached in the document below. ![]()
0 Comments
Read More
Leave a Reply. |