جنين الدجاج إلى عمر 24 ساعة حضانة
Understand the Problem
السؤال عبارة عن نص باللغة العربية من مصدر حول علم الأجنة. يتناول مراحل تكوين جنين الدجاج، مع التركيز على التطورات التي تحدث خلال فترة حضانة تتراوح من 21 إلى 24 ساعة. يصف النص تكوين الطيات العصبية والأخدود العصبي، بالإضافة إلى المعي البدائي وتطوراته اللاحقة، مع الإشارة إلى بعض التراكيب التشريحية مثل الطية الرأسية والجيب تحت الرأسي. كما يتضمن النص وصفا للبواب المعوي الأمامي ودور الأديم المتوسط في التطور الجنيني.
Answer
In a 21-hour incubated chick embryo, the neural plate lowers to form a neural groove, flanked by neural folds that become more pronounced and closer together towards the front of the embryo.
The neural plate lowers in its center in the 21-hour incubated embryo, forming a neural groove which becomes deeper in the middle and posterior region. On both sides of the groove, there are two neural folds that become clearer and higher in the 21-hour embryo. These folds are closer to each other in the region directly behind the head and in front of the level of the first somite compared to the rest of the anterior region, with the anterior region being more advanced than the posterior region. The neural folds gradually diverge from each other towards the back.
Answer for screen readers
The neural plate lowers in its center in the 21-hour incubated embryo, forming a neural groove which becomes deeper in the middle and posterior region. On both sides of the groove, there are two neural folds that become clearer and higher in the 21-hour embryo. These folds are closer to each other in the region directly behind the head and in front of the level of the first somite compared to the rest of the anterior region, with the anterior region being more advanced than the posterior region. The neural folds gradually diverge from each other towards the back.
More Information
The neural folds eventually fuse to form the neural tube, which develops into the brain and spinal cord.
Tips
Pay attention to the timing of developmental events, as the appearance and characteristics of structures change rapidly during the early stages of embryonic development.
Sources
- DOC fa0f72d6-7947-42ff-86dd-8192bc799784.docx - جامعة بغداد - repository.uobaghdad.edu.iq
- دراسة جنين الدجاج بعمر 24 ساعة من بدء الحضن - spu.edu.sy
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