zonary placenta

A placenta in which the chorionic villi have aggregated to form a broad band that circles about the center of the chorion. Such zones may be complete circles (such as those in dogs and cats) or incomplete (such as those in bears and seals). It is thought that zonary placentae form from diffuse placentae in which the villi at the ends regress, leaving only those in the center to function. At the edges of the zonary placenta is the hemophagous organ, which is green. The color is due to the degradation of hemoglobin into bilivirdin. This green organ provides iron for the developing fetus.

النوع Organ
البنية الأم placenta

الأسئلة الشائعة

What is the zonary placenta?
A placenta in which the chorionic villi have aggregated to form a broad band that circles about the center of the chorion. Such zones may be complete circles (such as those in dogs and cats) or incomplete (such as those in bears and seals). It is thought that zonary placentae form from diffuse place

البنى ذات الصلة

mucus body coating mucous body coating mucus cocoon mucous cocoon Mullerian duct ductus paramesonephricus multi cell part structure cell part cluster multicellular anatomical structure multicellular structure multilaminar epithelium laminated epithelium multi-tissue structure multi-tissue structures multi-unit eye

إخلاء المسؤولية الطبية

هذا المحتوى لأغراض تعليمية وإعلامية فقط. لا يُقصد به أن يكون بديلاً عن المشورة الطبية المهنية أو التشخيص أو العلاج. استشر دائماً طبيبك أو مزود الرعاية الصحية المؤهل الآخر بشأن أي أسئلة قد تكون لديك بخصوص حالة طبية. لا تتجاهل أبداً المشورة الطبية المهنية أو تتأخر في طلبها بسبب شيء قرأته على هذا الموقع.

Educational Disclaimer

This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical decisions.

Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.