Leydig's organ

A hemopoietic organ found in elasmobranchs. Along with the spleen and special tissue around the gonads, this structure produces red blood cells and it is nestled along the top and bottom of the esophagus.

النوع Organ
جهاز الجسم Lymphatic/Immune
البنية الأم hemopoietic organ

الأسئلة الشائعة

What is Leydig's organ and which animals have it?
Leydig's organ is a hemopoietic (blood-forming) organ found exclusively in elasmobranchs — the group of cartilaginous fish that includes sharks, rays, and skates. It is embedded along the upper and lower walls of the esophagus and produces red blood cells, functioning similarly to bone marrow in other vertebrates.
How does Leydig's organ compare to other hemopoietic tissues in sharks?
Elasmobranchs have multiple hemopoietic sites including Leydig's organ, the spleen, and specialized tissue around the gonads. Leydig's organ is notable for its location along the esophagus and its substantial contribution to red blood cell production. The relative importance of each site varies among elasmobranch species.
Is Leydig's organ related to Leydig cells in the testes?
No — these are completely unrelated structures that share a name because both were described by the 19th-century German anatomist Franz von Leydig. Leydig cells in the testes produce testosterone in mammals, whereas Leydig's organ in elasmobranchs is an esophageal hemopoietic organ with no reproductive function.

البنى ذات الصلة

parenchyma of spleen splenic parenchyma red bone marrow medulla ossium rubra reticuloendothelial system lymphoreticular Schweigger-Seidel sheath spleen B cell corona B cell domain of the spleen spleen capsule capsula splenica spleen follicular dendritic cell network FDC network non-lymphatic part of lymphoid system non-lymphatic lymphoid system

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.